brute (n.) Look up brute at Dictionary.com
1610s, from brute (adj.).
brute (adj.) Look up brute at Dictionary.com
early 15c., "of or belonging to animals," from Middle French brut "coarse, brutal, raw, crude," from Latin brutus "heavy, dull, stupid," said to be an Oscan word, from PIE *gwruto-, suffixed form of root *gwere- (2) "heavy." Before reaching English the meaning expanded to "of the lower animals." Used of human beings from 1530s.
brutish (adj.) Look up brutish at Dictionary.com
1530s, "pertaining to animals," from brute (n.) + -ish. In reference to human brutes, from 1550s. Related: Brutishly; brutishness.
Brutus Look up Brutus at Dictionary.com
A surname of the Junian gens. Association with betrayal traces to Marcus Junius Brutus (c. 85 B.C.E.-42 B.C.E.), Roman statesman and general and conspirator against Caesar.
bruxism (n.) Look up bruxism at Dictionary.com
"grinding the teeth unconsciously," from Greek ebryxa, aorist root of brykein "to gnash the teeth."
bryo- Look up bryo- at Dictionary.com
word-forming element meaning "moss" in scientific compounds, from Greek bryos, bryon "moss."
bryophyte (n.) Look up bryophyte at Dictionary.com
from Modern Latin Bryophyta (1864), from bryo- "moss" + -phyte "plant" (n.).
Brythonic (adj.) Look up Brythonic at Dictionary.com
"of the Britons, Welsh," 1884, from Welsh Brython, cognate with Latin Britto (see Briton). Introduced by Welsh Celtic scholar Professor John Rhys (1840-1915) to avoid the confusion of using Briton/British with reference to ancient peoples, religions, and languages.
BS (n.) Look up BS at Dictionary.com
c. 1900, slang abbreviation of bullshit (q.v.).
btw Look up btw at Dictionary.com
internet abbreviation of by the way, in use by 1989.
bub (n.) Look up bub at Dictionary.com
familiar address for males, 1839, perhaps a variation of bud "a little boy" (1848), American English colloquial; perhaps from German bube "boy," or from English brother.
bubba (n.) Look up bubba at Dictionary.com
Southern U.S. slang, 1860s, a corruption of brother.
bubble (v.) Look up bubble at Dictionary.com
mid-15c., perhaps from bubble (n.) and/or from Middle Low German bubbeln (v.), probably of echoic origin. Related: Bubbled; bubbling.
bubble (n.) Look up bubble at Dictionary.com
early 14c., perhaps from Middle Dutch bobbel (n.) and/or Middle Low German bubbeln (v.), all probably of echoic origin. Bubble bath first recorded 1949. Of financial schemes originally in South Sea Bubble (1590s), on notion of "fragile and insubstantial."
bubble-gum (n.) Look up bubble-gum at Dictionary.com
1937, from bubble (n.) + gum (n.). Figurative of young teenager tastes or culture from the early 1960s.
bubbly (adj.) Look up bubbly at Dictionary.com
1590s, from bubble (n.) + -ly (2). Of persons, from 1939. The slang noun meaning "champagne" (1920) is short for bubbly water (1910).
bubo (n.) Look up bubo at Dictionary.com
late 14c., plural buboes, from Late Latin bubo (genitive bubonis) "swelling of lymph glands" (in the groin), from Greek boubon "the groin, swelling in the groin."
bubonic (adj.) Look up bubonic at Dictionary.com
"characterized by swelling in the groin," by 1795, from Latin bubo (genitive bubonis) "swelling of lymph glands" (in the groin), from Greek boubon "the groin; swelling in the groin" + -ic. Bubonic plague attested by 1827.
buccal (adj.) Look up buccal at Dictionary.com
"pertaining to the cheek," 1831, from Latin bucca "cheek," especially when puffed out (later "mouth"); see bouche.
buccaneer (n.) Look up buccaneer at Dictionary.com
1660s, from French boucanier "user of a boucan," a native grill for roasting meat, from Tupi mukem (rendered in Portuguese as moquem c. 1587): "initial b and m are interchangeable in the Tupi language" [Klein]. For Haitian variant barbacoa, see barbecue. Originally used of French settlers working as hunters and woodsmen in the Spanish West Indies, a lawless and piratical set after they were driven from their trade by Spanish authorities in the 1690s.
Bucephalus Look up Bucephalus at Dictionary.com
Alexander the Great's favorite horse, from Greek Boukephalos, literally "Ox-head," from bous "ox" (see cow (n.)) + kephale "head" (see cephalo-).
Men called [him] Bucephalus ... of the marke or brand of a buls head, which was imprinted vpon his shoulder. [Pliny, I.220, tr. Holland, 1601]
buck (n.1) Look up buck at Dictionary.com
"male deer," c. 1300, earlier "male goat;" from Old English bucca "male goat," from Proto-Germanic *bukkon (source also of Old Saxon buck, Middle Dutch boc, Dutch bok, Old High German boc, German Bock, Old Norse bokkr), perhaps from a PIE root *bhugo (source also of Avestan buza "buck, goat," Armenian buc "lamb"), but some speculate that it is from a lost pre-Germanic language. Barnhart says Old English buc "male deer," listed in some sources, is a "ghost word or scribal error."

Meaning "dollar" is 1856, American English, perhaps an abbreviation of buckskin, a unit of trade among Indians and Europeans in frontier days, attested in this sense from 1748. Pass the buck is first recorded in the literal sense 1865, American English:
The 'buck' is any inanimate object, usually knife or pencil, which is thrown into a jack pot and temporarily taken by the winner of the pot. Whenever the deal reaches the holder of the 'buck', a new jack pot must be made. [J.W. Keller, "Draw Poker," 1887]
Perhaps originally especially a buck-handled knife. The figurative sense of "shift responsibility" is first recorded 1912. Buck private is recorded by 1870s, of uncertain signification.
buck (v.) Look up buck at Dictionary.com
1848, apparently with a sense of "jump like a buck," from buck (n.1). Related: Bucked; bucking. Buck up "cheer up" is from 1844.
buck (n.2) Look up buck at Dictionary.com
"sawhorse," 1817, American English, apparently from Dutch bok "trestle."
buck-eye (n.) Look up buck-eye at Dictionary.com
"American horse chestnut," 1763, said to be so called from resemblance of the nut to a stag's eye. See buck (n.1) + eye (n.). Meaning "native of Ohio" is attested since 1822.
buckaroo (n.) Look up buckaroo at Dictionary.com
1889, American English, from bakhara (1827), from Spanish vaquero "cowboy," from vaca "cow," from Latin vacca (see vaccination). Spelling altered by influence of buck (n.1).
buckboard (n.) Look up buckboard at Dictionary.com
1839, "plank on wheels," from board (n.1) + buck "body of a cart or wagon" (1690s), perhaps representing a dialectal survival of Old English buc "belly, body, trunk" (see bucket). As a type of vehicle constructed this way, from 1874.
bucket (n.) Look up bucket at Dictionary.com
mid-13c., from Anglo-French buquet "bucket, pail," from Old French buquet "bucket," which is from Frankish or some other Germanic source, or a diminutive of cognate Old English buc "pitcher, bulging vessel," originally "belly" (buckets were formerly of leather as well as wood), both from West Germanic *buh- (source also of Dutch buik, Old High German buh, German Bauch "belly"), possibly from a variant of PIE root *beu-, *bheu- "to grow, swell" (see bull (n.2)).

Kick the bucket "to die" (1785) perhaps is from unrelated Old French buquet "balance," a beam from which slaughtered animals were hung; perhaps reinforced by the notion of suicide by hanging after standing on an upturned bucket (but Farmer calls attention to bucket "a Norfolk term for a pulley").
Buckinghamshire Look up Buckinghamshire at Dictionary.com
Old English Buccingahamscir, from Buccingahamme (early 10c.), "River-bend land of the family or followers of a man called Bucca."
buckish (adj.) Look up buckish at Dictionary.com
"dandyish," 1782, from buck (n.1) in the slang sense + -ish. Related: Buckishly.
buckle (v.1) Look up buckle at Dictionary.com
late 14c., bokelen, "to fasten with a buckle," from buckle (n.). Related: Buckled; buckling. To buckle down "apply effort, settle down," (1874) is said to be a variant of knuckle down (see knuckle).
buckle (n.) Look up buckle at Dictionary.com
"spiked metal ring for holding a belt, etc., c. 1300, bukel, from Old French bocle "boss (of a shield)," then "shield," then by further extension "buckle, metal ring," (12c., Modern French boucle), from Latin buccula "cheek strap of a helmet," in Late Latin "boss of a shield," diminutive of bucca "cheek" (see bouche).
Boucle in the middle ages had the double sense of a "shield's boss" and "a ring"; the last sense has alone survived, and it metaph. developed in the boucle de cheveux, ringlets. [Kitchin]
buckle (v.2) Look up buckle at Dictionary.com
"distort, warp, bend out of shape" 1520s, bokelen "to arch the body," from Middle French boucler "to bulge," from Old French bocler "to bulge," from bocle "boss of a shield" (see buckle (n.)). Meaning "bend under strong pressure" is from 1590s (figurative from 1640s) . Related: Buckled; buckling.
buckler (n.) Look up buckler at Dictionary.com
"small, round shield used to ward off blows," c. 1300, from Old French bocler "boss (of a shield), shield, buckler" (12c., Modern French bouclier), from Latin *buccularius (adj.) "having a boss," from buccula (see buckle (n.)).
bucko (n.) Look up bucko at Dictionary.com
term of address, originally (1883) nautical and with a sense of "swaggering, domineering fellow." Probably from buck (n.1) in the slang sense of "a blood or choice spirit."
There are in London divers lodges or societies of Bucks, formed in imitation of the Free Masons: one was held at the Rose, in Monkwell-street, about the year 1705. The president is styled the Grand Buck. ["Dictionary of the Vulgar Tongue," 1811]
buckra (n.) Look up buckra at Dictionary.com
disparaging term among African-Americans for "white person," especially a poor one, 1790, apparently from an African language; compare mbakara "master" in Efik, a language of the Ibibio people of southern Nigeria.
buckram (n.) Look up buckram at Dictionary.com
early 13c., from Old French boquerant "fine oriental cloth" (12c., Modern French bougran), probably (along with Spanish bucarán, Italian bucherame) from Bukhara, city in central Asia from which it was imported to Europe. Originally a name of a delicate, costly fabric, it later came to mean coarse linen used for lining. The -m in the English word may indicate Italian origin (compare Italian bucherame, 14c.).
buckshot (n.) Look up buckshot at Dictionary.com
coarse kind of shot used for deer and other large game, 1776, from buck (n.1) + shot (n.).
buckskin (n.) Look up buckskin at Dictionary.com
c. 1300, "skin of a buck," from buck (n.1) + skin (n.). Meaning "leather made from buckskin" was in use by 1804. The word was a nickname for Continental troops in the American Revolution.
bucktooth (n.) Look up bucktooth at Dictionary.com
1540s, from buck (n.1), perhaps on the notion of "kicking up," + tooth. In French, buck teeth are called dents à l'anglaise, literally "English teeth." Old English had twisel toð "with two protruding front teeth." Related: Buck-toothed.
buckwheat (n.) Look up buckwheat at Dictionary.com
1540s, from Middle Dutch boecweite "beech wheat" (compare Danish boghvede, Swedish bovete, German Buchweizen), so called from resemblance between grains and seed of beech trees. Possibly a native formation on the same model as the Dutch word, from a dialectal form of beech. See beech + wheat.
bucolic (adj.) Look up bucolic at Dictionary.com
1610s, earlier bucolical (1520s), from Latin bucolicus, from Greek boukolikos "pastoral, rustic," from boukolos "cowherd, herdsman," from bous "cow" (see cow (n.)) + -kolos "tending," related to Latin colere "to till (the ground), cultivate, dwell, inhabit" (from PIE root *kwel- (1) "revolve, move round; sojourn, dwell"). Middle Irish búachaill, Welsh bugail "shepherd" are Celtic words form from the same root material as Greek boukolos.
bud (v.) Look up bud at Dictionary.com
c. 1400; see bud (n.). Related: Budded; budding.
bud (n.) Look up bud at Dictionary.com
late 14c., budde, origin unknown, perhaps from Old French boter "push forward, thrust," itself a Germanic word (compare Dutch bot "bud," Old Saxon budil "bag, purse," German Beutel), or perhaps from Old English budd "beetle."
Budapest Look up Budapest at Dictionary.com
Hungarian capital, formed 1872 from merger of two cities on opposite shores of the Danube, Buda (probably from a word originally meaning "water") + Pest, a Hungarian word meaning "furnace, oven, cove," also in Slavic (compare Russian pech'). Compare Ofen, literally "oven," the old German name for the place.
Buddha (n.) Look up Buddha at Dictionary.com
1680s, from Pali, literally "awakened, enlightened," past participle of budh "to awake, know, perceive," related to Sanskrit bodhati "is awake, observes, understands" (see bode). Title given by his adherents to the man who taught this path, Siddhartha Gautama, also known to them as Sakyamuni "Sage of the Sakyas" (his family clan), who lived in northern India 5c. B.C.E.
Buddhism (n.) Look up Buddhism at Dictionary.com
1801, from Buddha + -ism.
Buddhist (n.) Look up Buddhist at Dictionary.com
1810, from Buddha + -ist. An earlier word in this sense was a direct borrowing of Sanskrit Bauddha "follower of Buddha" (1801 in English), hence early erroneous hybrid compounds such as Boudhist, Bauddhist.
buddy (v.) Look up buddy at Dictionary.com
1931, perhaps originally U.S. underworld slang, usually with up, from buddy (n.). Related: Buddied; buddying.
buddy (n.) Look up buddy at Dictionary.com
1850, American English, possibly an alteration of brother, or from British colloquial butty "companion" (1802), itself perhaps a variant of booty in booty fellow "confederate who shares plunder" (1520s). But butty, meaning "work-mate," also was a localized dialect word in England and Wales, attested since 18c., and long associated with coal miners. Short form bud is attested from 1851. Reduplicated form buddy-buddy (adj.) attested by 1952, American English.
Lenny Kent, a long-time fave here, is really in his element. ... After four weeks here he's got everone in town saying, "Hiya, Buddy, Buddy" with a drawl simulating his. [Review of Ned Schuyler's 5 O'Clock Club, Miami Beach, Fla., "Billboard," Nov. 12, 1949]
Buddy system attested from 1920.