brolly (n.) Look up brolly at Dictionary.com
British slang, "umbrella," by 1866, a clipped and shortened form of umbrella.
bromeliad (n.) Look up bromeliad at Dictionary.com
from Modern Latin Bromeliaceæ, family name given by Linnæus, for Olaus Bromel (1639-1705), Swedish botanist. Related: Bromeliads.
bromide (n.) Look up bromide at Dictionary.com
compound of bromine and another metal or radical, 1836, from bromine, the pungent, poisonous element, + -ide. Used as a sedative; figurative sense of "dull, conventional person or trite saying" popularized by U.S. humorist Frank Gelett Burgess (1866-1951) in his book "Are You a Bromide?" (1906). Related: Bromidic.
bromine (n.) Look up bromine at Dictionary.com
nonmetallic element, 1827, from French brome, from Greek bromos "stench." With chemical suffix -ine (2). The evil-smelling dark red liquid was discovered by French chemist Antoine Jérôme Balard (1802-1876), who initially called it muride.
bronchial (adj.) Look up bronchial at Dictionary.com
c. 1735, from Late Latin bronchus, from Greek bronkhos "windpipe, throat" (from PIE *gwro-nkh-, from root *gwere- (4) "to swallow;" see voracity) + -al (1). bronchial tubes is from 1847.
bronchiectasis (n.) Look up bronchiectasis at Dictionary.com
Modern Latin, from Greek bronkhia "the bronchial tubes" (plural; see bronchial) + ektasis "a stretching out, extension, dilation."
bronchiole (n.) Look up bronchiole at Dictionary.com
Modern Latin, from diminutive of bronchia "the bronchial tubes" (plural; see bronchial).
bronchitis (n.) Look up bronchitis at Dictionary.com
coined in Modern Latin 1808 by Charles Bedham, from bronchia "the bronchial tubes" (plural; see bronchial) + -itis "inflammation."
bronchoscopy (n.) Look up bronchoscopy at Dictionary.com
from German bronchoskopie (1898), from Latinized combining form of Greek bronkhia "the bronchial tubes" (plural; see bronchial); also see -scopy.
bronchus (n.) Look up bronchus at Dictionary.com
1706 (plural bronchi), from Greek bronkhos "the wind pipe" (see bronchial).
bronco (n.) Look up bronco at Dictionary.com
also broncho, 1850, American English, "untamed or half-tamed horse," from noun use of Spanish bronco (adj.) "rough, rude," originally a noun meaning "a knot in wood," perhaps from Vulgar Latin *bruncus "a knot, projection," apparently from a cross of Latin broccus "projecting" (see broach (n.)) + truncus "trunk of a tree" (see trunk (n.1)). Bronco-buster is attested from 1886.
brontosaurus (n.) Look up brontosaurus at Dictionary.com
1879, Modern Latin, from Greek bronte "thunder" (perhaps from PIE imitative root *bhrem- "to growl") + -saurus. Brontes was the name of one of the Cyclopes in Greek mythology.
Bronx Look up Bronx at Dictionary.com
named for Jonas Bronck, who settled there in 1641.
Jonas Bronck, who arrived at New Amsterdam in 1639, and whose name is perpetuated in Bronx Borough, Bronx Park, Bronxville -- in New York -- was a Scandinavian, in all probability a Dane and originally, as it seems, from Thorshavn, Faroe Islands, where his father was a pastor in the Lutheran Church. Faroe then belonged to Denmark-Norway and had been settled by Norwegians. The official language of the island in Bronck's days was Danish. ... Bronck may have been a Swede if we judge by the name alone for the name of Brunke is well known in Sweden. [John Oluf Evjen, "Scandinavian immigrants in New York, 1630-1674," Minneapolis, 1916]
Bronx cheer first recorded 1929.
bronze (v.) Look up bronze at Dictionary.com
1640s, literally, 1726 figuratively, from French bronzer (16c.) or else from bronze (n.). Related: Bronzed; bronzing. Meaning "to make to be bronze in color" is from 1792.
bronze (n.) Look up bronze at Dictionary.com
1721, "alloy of copper and tin," from French bronze, from Italian bronzo, from Medieval Latin bronzium. Perhaps cognate (via notion of color) with Venetian bronza "glowing coals," or German brunst "fire." Perhaps influenced by Latin Brundisium the Italian town of Brindisi (Pliny writes of aes Brundusinum). Perhaps ultimately from Persian birinj "copper."

In Middle English, the distinction between bronze (copper-tin alloy) and brass (copper-zinc alloy) was not clear, and both were called bras. A bronze medal was given to a third-place finisher since at least 1852. The archaeological Bronze Age (1865) falls between the Stone and Iron ages, and is a reference to the principal material for making weapons and ornaments.
brooch (n.) Look up brooch at Dictionary.com
early 13c., from Old French broche "long needle" (see broach (n.)). Specialized meaning led 14c. to distinct spelling.
brood (v.) Look up brood at Dictionary.com
"sit on eggs, hatch," mid-15c., from brood (n.). The figurative meaning ("to incubate in the mind") is first recorded 1570s, from notion of "nursing" one's anger, resentment, etc. Related: Brooded; brooding.
brood (n.) Look up brood at Dictionary.com
Old English brod "brood, fetus, hatchling," from Proto-Germanic *brod (source also of Middle Dutch broet, Old High German bruot, German Brut "brood"), literally "that which is hatched by heat," from *bro- "to warm, heat," from PIE *bhre- "burn, heat, incubate," from root *bhreu- "to boil, bubble, effervesce, burn."
brooding (n.) Look up brooding at Dictionary.com
"action of incubating," c. 1400, verbal noun from brood (v.). Figuratively (of weather, etc.) from 1805; of mental fixations by 1873. Related: Broodingly.
brooding (adj.) Look up brooding at Dictionary.com
1640s, "hovering, overhanging" (as a mother bird does her nest), from present participle of brood (v.); meaning "that dwells moodily" first attested 1818 (in "Frankenstein").
broody (adj.) Look up broody at Dictionary.com
1510s, "apt to breed," from brood (v.) + -y (2). Figuratively, of persons, from 1851. Also, in modern use, sometimes "full of maternal yearning." Related: Broodily; broodiness.
brook (n.) Look up brook at Dictionary.com
"small stream," Old English broc "flowing stream, torrest," of obscure origin, probably from Proto-Germanic *broka- which yielded words in German (Bruch) and Dutch (broek) that have a sense of "marsh." In Sussex and Kent, it means "water-meadow," and in plural, "low, marshy ground."
brook (v.) Look up brook at Dictionary.com
"to endure," Old English brucan "use, enjoy, possess; eat; cohabit with," from Proto-Germanic *bruk- "to make use of, enjoy" (source also of Old Saxon brukan, Old Frisian bruka, Old High German bruhhan, German brauchen "to use," Gothic brukjan), from PIE root *bhrug- "to enjoy." Sense of "use" applied to food led to "be able to digest," and by 16c. to "tolerate."
Brooke Look up Brooke at Dictionary.com
fem. proper name, rare in U.S. before 1965, popular 1980s, 1990s.
Brooklyn Look up Brooklyn at Dictionary.com
New York City borough, named for village founded there 1646 and named for Dutch township of Breukelen near Utrecht; from Old High German bruoh "moor, marshland;" spelling of U.S. place name influenced by brook (n.), which probably is distantly related.
broom (n.) Look up broom at Dictionary.com
Old English brom "broom, brushwood," the common flowering shrub whose twigs were tied together to make a tool for sweeping, from Proto-Germanic *bræmaz "thorny bush" (source also of Dutch braam, German Brombeere "blackberry"), from PIE root *bh(e)rem- "to project, a point."

Traditionally, both the flowers and sweeping with broom twigs were considered unlucky in May (Suffolk, Sussex, Wiltshire, etc.). The witch's flying broomstick originally was one among many such objects (pitchfork, trough, bowl), but the broomstick became fixed as the popular tool of supernatural flight via engravings from a famous Lancashire witch trial of 1612.
brose (n.) Look up brose at Dictionary.com
1650s, Scottish, earlier browes, from Old French broez, nominative of broet (13c.) "stew, soup made from meat broth," diminutive of breu, from Medieval Latin brodium, from Old High German brod "broth" (see broth).
broth (n.) Look up broth at Dictionary.com
Old English broþ, from Proto-Germanic *bruthan (source also of Old High German *brod), from verb root *bhreue- "to heat, boil, bubble; liquid in which something has been boiled" (from PIE root *bhreu- "to boil, bubble, effervesce, burn"). Picked up from Germanic by the Romanic and Celtic languages.

The Irishism broth of a boy, which is in Byron, was "thought to originate from the Irish Broth, passion -- Brotha passionate, spirited ..." [Farmer], and if so is not immediately related.
brothel (n.) Look up brothel at Dictionary.com
"bawdy house," 1590s, shortened from brothel-house, from brothel "prostitute" (late 15c.), earlier "vile, worthless person" of either sex (14c.), from Old English broðen past participle of breoðan "deteriorate, go to ruin," from Proto-Germanic *breuthan "to be broken up," related to *breutan "to break" (see brittle). In 16c. brothel-house was confused with unrelated bordel (see bordello) and the word shifted meaning from a person to a place.
brother (n.) Look up brother at Dictionary.com
Old English broþor, from Proto-Germanic *brothar (source also of Old Norse broðir, Danish broder, Old Frisian brother, Dutch broeder, German Bruder, Gothic bróþar), from PIE root *bhrater (source also of Sanskrit bhrátár-, Old Persian brata, Greek phratér, Latin frater, Old Irish brathir, Welsh brawd, Lithuanian broterelis, Old Prussian brati, Old Church Slavonic bratru, Czech bratr "brother").

A highly stable word across the Indo-European languages. In the few cases where other words provide the sense, it is where the cognate of brother had been applied widely to "member of a fraternity," or where there was need to distinguish "son of the same mother" and "son of the same father." E.g. Greek adelphos, probably originally an adjective with frater and meaning, specifically, "brother of the womb" or "brother by blood;" and Spanish hermano "brother," from Latin germanus "full brother." As a familiar term of address from one man to another, it is attested from 1912 in U.S. slang; the specific use among blacks is recorded from 1973.
Brother Jonathan (n.) Look up Brother Jonathan at Dictionary.com
sobriquet for "United States," 1816, often connected with Jonathan Trumbull (1740-1809) of Connecticut, called Brother Jonathan by George Washington, who often sought his advice, somehow in reference to 2 Sam i:26.
brother-in-law (n.) Look up brother-in-law at Dictionary.com
c. 1300; also brother in law; see brother. In Arabic, Urdu, Swahili, etc., brother-in-law, when addressed to a male who is not a brother-in-law, is an extreme insult, with implications of "I slept with your sister."
brotherhood (n.) Look up brotherhood at Dictionary.com
equivalent of Old English broþerrede "fellowship, brotherhood," with ending as in kindred; in early Middle English the word was brotherhede with ending as in maidenhead. The modern word, with -hood, is from 15c. Originally "relationship of a brother," also "friendly companionship." Concrete sense of "an association, a fraternity" is from mid-14c. in the Middle English word (later also "labor union," 1880s). Old English also had broðorscipe "brothership," broðorsibb "kinship of brothers."
Oh, the Protestants hate the Catholics,
And the Catholics hate the Protestants,
And the Hindus hate the Muslims,
And everybody hates the Jews.

[Tom Lehrer, "National Brotherhood Week" lyrics, 1965]
brotherliness (n.) Look up brotherliness at Dictionary.com
Old English broðorlichnes; see brotherly + -ness.
brotherly (adj.) Look up brotherly at Dictionary.com
Old English broðorlic; see brother + -ly (1).
brougham (n.) Look up brougham at Dictionary.com
1851, one-horse closed carriage with two or four wheels, for two or four persons, from first Lord Brougham (1778-1868). The family name is from a place in Westmoreland.
brought Look up brought at Dictionary.com
past tense and past participle of bring (v.). For explanation of the form development, see thought.
brouhaha (n.) Look up brouhaha at Dictionary.com
1890, from French brouhaha (1550s), said by Gamillscheg to have been, in medieval theater, "the cry of the devil disguised as clergy." Perhaps from Hebrew barukh habba' "blessed be the one who comes," used on public occasions (as in Psalm cxviii).
brow (n.) Look up brow at Dictionary.com
early 14c., browes, brues "brow, forehead, eyebrow," earlier brouwes (c. 1300), bruwen (c. 1200), from Old English bru, probably originally "eyebrow," but extended to "eyelash," then "eyelid" by association of the hair of the eyebrow with the hair of the eyelid, the eyebrows then becoming Old English oferbrua "overbrows" (early Middle English uvere breyhes or briges aboue þe eiges).

The general word for "eyebrow" in Middle English was brew, breowen (c. 1200), from Old English bræw (West Saxon), *brew (Anglian), from Proto-Germanic *bræwi- "blinker, twinkler" (source also of Old Frisian bre, Old Saxon brawa, Middle Dutch brauwe "eyelid," Old High German brawa"eyebrow," Old Norse bra "eyebrow," Gothic brahw "twinkle, blink," in phrase in brahwa augins "in the twinkling of an eye").

Old English bru is from Proto-Germanic *brus- "eyebrow" (source also of Old Norse brun), from PIE *bhru- "eyebrow" (source also of Sanskrit bhrus "eyebrow," Greek ophrys, Old Church Slavonic bruvi, Lithuanian bruvis "brow," Old Irish bru "edge"). The -n- in the Old Norse (brun) and German (braune) forms of the word are from a genitive plural inflection.

Words for "eyelid," "eyelash," and "eyebrow" changed about maddeningly in Old and Middle English (and in all the West Germanic languages). By 1530s, brow had been given an extended sense of "forehead," especially with reference to movements and expressions that showed emotion or attitude.
browbeat (v.) Look up browbeat at Dictionary.com
"to bully," originally "to bear down with stern or arrogant looks," 1580s, from brow + beat (v.).
[I]t appears from the earliest quotations ... that the brow in question was that of the beater, not of the beaten party; but it is not evident whether the meaning was 'to beat with one's (frowning) brows,' or 'to beat (?lower) one's brows at.' [OED]
Related: Browbeaten; browbeating.
brown (v.) Look up brown at Dictionary.com
c. 1300, "to become brown," from brown (adj.). From 1560s as "to make brown." Related: Browned; browning.
brown (n.) Look up brown at Dictionary.com
"brown color," c. 1600, from brown (adj.).
brown (adj.) Look up brown at Dictionary.com
Old English brun "dark, dusky," developing a definite color sense only 13c., from Proto-Germanic *brunaz (source also of Old Norse brunn, Danish brun, Old Frisian and Old High German brun, Dutch bruin, German braun), from PIE root *bher- (2) "bright; brown."

The Old English word also had a sense of "brightness, shining," preserved only in burnish. The Germanic word was adopted into Romanic (Middle Latin brunus, Italian and Spanish bruno, French brun). Brown Bess, slang name for old British Army flintlock musket, first recorded 1785.
Brown Shirt (n.) Look up Brown Shirt at Dictionary.com
generic term for "Nazi, fascist," especially of the thuggish sort, 1934, originally (1922) in reference to the German Sturmabteilung, Nazi militia founded 1921; they were called Brown Shirts in English because of their uniforms.
brown-bag (v.) Look up brown-bag at Dictionary.com
"to bring lunch or liquor in a brown paper bag," 1970, from brown (adj.) + bag (n.). Related: Brown-bagging.
brown-nose (v.) Look up brown-nose at Dictionary.com
also brownnose, 1939, American English colloquial, said to be military slang originally, from brown (adj.) + nose (n.), "from the implication that servility is tantamount to having one's nose in the anus of the person from whom advancement is sought" [Webster, 1961]. Related: Brown-noser, brown-nosing (both 1950).
brownfield (n.) Look up brownfield at Dictionary.com
abandoned or disused industrial land, often contaminated to some degree, 1992, American English, from brown (adj.) + field (n.).
Brownian movement (n.) Look up Brownian movement at Dictionary.com
1871, for Scottish scientist Dr. Robert Brown (1773-1858), who first described it.
brownie (n.) Look up brownie at Dictionary.com
"benevolent goblin supposed to haunt old farmhouses in Scotland," 1510s, diminutive of brown "a wee brown man" (see brown (adj.)). The name for the junior branch of the Girl Guides or Girl Scouts is 1916, in reference to uniform color. Brownie point (1963) is sometimes associated with Brownie in the Scouting sense but is perhaps rather from brown-nose.
Browning Look up Browning at Dictionary.com
one of a range of U.S.-made weapons, 1905, named for inventor, John M. Browning (1855-1926) of Utah.