raindrop (n.) Look up raindrop at Dictionary.com
Old English rendropa; see rain (n.) + drop (n.).
rainfall (n.) Look up rainfall at Dictionary.com
also rain-fall, "amount of precipitation that falls as rain," 1839, from rain (n.) + fall (n.).
rainmaker (n.) Look up rainmaker at Dictionary.com
also rain-maker, 1775, in reference to American Indian tribal magicians, from rain (n.) + agent noun of make (v.).
rainproof (adj.) Look up rainproof at Dictionary.com
also rain-proof, 1788, from rain (n.) + proof (n.).
rainstorm (n.) Look up rainstorm at Dictionary.com
1804, from rain (n.) + storm (n.).
rainwater (n.) Look up rainwater at Dictionary.com
Old English renwæter; see rain (n.) + water (n.1).
rainy (adj.) Look up rainy at Dictionary.com
Old English renig; see rain (n.) + -y (2).
raise (v.) Look up raise at Dictionary.com
c. 1200, "cause a rising of; lift upright, set upright; build, construct," from a Scandinavian source, such as Old Norse reisa "to raise," from Proto-Germanic *raizjan (source also of Gothic ur-raisjan, Old English ræran "to rear;" see rear (v.)), causative of root *ris- "to rise" (see rise (v.)). At first sharing many senses with native rear (v.).

Meaning "make higher" is from c. 1300 in the physical sense, as is that of "restore to life." Of the voice, from late 14c. Meaning "increase the amount of" is from c. 1500; from 1530s of prices, etc. Meaning "to bring up" (a question, etc.) is from 1640s. Card-playing sense is from 1821. Meaning "promote the growth of" (plants, etc.) is from 1660s; sense of "foster, rear, bring up" (of children) is from 1744. Meaning "to elevate" (the consciousness) is from 1970. Related: Raised; raising.

Pickering (1816) has a long passage on the use of raise and grow in reference to crops. He writes that in the U.S. raise is used of persons, in the sense "brought up," but it is "never thus used in the Northern States. Bartlett [1848] adds that it "is applied in the Southern States to the breeding of negroes. It is sometimes heard at the North among the illiterate; as 'I was raised in Connecticut,' meaning brought up there."
raise (n.) Look up raise at Dictionary.com
"act of raising or lifting," 1530s, from raise (v.). Meaning "an increase in amount or value" is from 1728. Meaning "increase in salary or wages" is from 1898, chiefly American English (British preferring rise). Earliest attested use (c. 1500) is in obsolete sense of "a levy."
raisin (n.) Look up raisin at Dictionary.com
"dried sweet grape," c. 1300, from Anglo-French raycin (late 13c.), Old French raisin "grape; raisin," from Vulgar Latin *racimus, alteration of Latin racemus "cluster of grapes or berries" (also source of Spanish racimo, Italian racemo), probably a loan-word from the same ancient lost Mediterranean language that gave Greek rhax (genitive rhagos) "grape, berry." In Middle English the word also could be used of grapes themselves. Dutch razun also is from French; German Rosine is from an Old French variant form.
raising (n.) Look up raising at Dictionary.com
mid-14c., "an act of elevating," verbal noun from raise (v.). Specifically in American English, "the erecting of a building," by 1650s.
RAISING. In New England and the Northern States, the operation or work of setting up the frame of a building. [Webster, 1830]
raison d'etat (n.) Look up raison d'etat at Dictionary.com
from French raison d'état "reason of state," thus "convenience of the government."
raison d'etre (n.) Look up raison d'etre at Dictionary.com
"excuse for being," 1864, first recorded in letter of J.S. Mill, from French raison d'être, literally "rational grounds for existence."
raisonne (adj.) Look up raisonne at Dictionary.com
"arranged logically," 1777, from French raisonné "reasoned," past participle of raisonner "to reason," from raison "course; matter; subject; language, speech; thought, opinion," from Latin rationem (nominative ratio) "reckoning, understanding, motive, cause," from ratus, past participle of reri "to reckon, think," from PIE root *re- "to reason, count."
Raj (n.) Look up Raj at Dictionary.com
British rule in India, 1859, from Hindi raj "rule, dominion, kingdom," from PIE root *reg- "move in a straight line," with derivatives meaning "to direct in a straight line," thus "to lead, rule."
rajah (n.) Look up rajah at Dictionary.com
also raja, "king or prince in India," 1550s, from Hindi, from Sanskrit rajan "king," related to raj "kingdom, kingship," rajati "he rules," and cognate with Latin rex, Old Irish rig "king" (from PIE root *reg- "move in a straight line," with derivatives meaning "to direct in a straight line," thus "to lead, rule"). Related: Rajput, "member of the ruling caste in northern India" (1590s), from Sanskrit rajaputrah "prince," literally "king's son," from putrah "son, boy" (see puerile).
rake (n.2) Look up rake at Dictionary.com
"debauchee; idle, dissolute person," 1650s, shortening of rakehell. Hogarth's "Rake's Progress" engravings were published in 1735.
rake (v.) Look up rake at Dictionary.com
mid-13c., "clear (rubbish, grass, etc.) by raking; gather (grain) by raking," from rake (n.1), or from a lost Old English verb related to it, or from a similar Scandinavian source (compare Swedish raka, Danish rage "rake"). Of gunfire from 1630s. Related: Raked; raking. To rake in money or something like it is from 1580s.
rake (n.1) Look up rake at Dictionary.com
"toothed tool for drawing or scraping things together," Old English raca "rake," earlier ræce, from Proto-Germanic *rak- "gather, heap up" (source also of Old Norse reka "spade, shovel," Old High German rehho, German Rechen "a rake," Gothic rikan "to heap up, collect"), from PIE root *reg- "move in a straight line," with derivatives meaning "to direct in a straight line," thus "to lead, rule" (source also of Greek oregein "to reach, stretch out," Latin regere "direct, rule; keep straight, guide"), perhaps via its action, or via the notion of "implement with straight pieces of wood" [Watkins].
rakehell (n.) Look up rakehell at Dictionary.com
1540s, possibly an alteration (by association with rake (n.1) and Hell) of Middle English rakel (adj.) "hasty, rash, headstrong," probably from raken "to go, proceed," from Old English racian "to go forward, move, hasten," of unknown origin. Compare rakeshame (n.) "one who lives shamefully" (1590s).
rakish (adj.) Look up rakish at Dictionary.com
1706, "debauched, disreputable," from rake (n.2) + -ish. Related: Rakishly; rakishness.

The meaning "smart, jaunty, dashing" (1824) is said to be a different word, probably from rake "slant, slope" (1620s), used especially in reference to any deviation from the vertical in a ship's masts, of uncertain origin, perhaps from Scandinavian (compare Old Swedish raka "project, reach;" Danish rage "protrude, project") related to Old English reccan "stretch." "The piratical craft of former times were distinguished for their rakish build" [Century Dictionary].
Raleigh Look up Raleigh at Dictionary.com
city in North Carolina, U.S., founded 1792 and named for Sir Walter Raleigh (1552-1618).
rally (v.1) Look up rally at Dictionary.com
"bring together," c. 1600, from French rallier, from Old French ralier "reassemble, unite again," from re- "again" (see re-) + alier "unite" (see ally (v.)). Intransitive meaning "pull together hastily, recover order, revive, rouse" is from 1660s. Related: Rallied; rallying. Rally round the flag (1862) is a line from popular American Civil War song "Battle Cry of Freedom."
rally (v.2) Look up rally at Dictionary.com
"make fun of, tease," 1660s, from French railler "to rail, reproach" (see rail (v.)).
rally (n.) Look up rally at Dictionary.com
1650s, originally in the military sense of "a regrouping for renewed action after a repulse," from rally (v.1). Sense of "mass meeting to stir enthusiasm" first attested 1840, American English. Sense of "gathering of automobile enthusiasts" is from 1932, from French rallye, itself from the English noun. Sports sense of "long series of hits" in tennis, etc., is from 1881, earlier "series of back-and-forth blows in a boxing match" (1829).
Ralph Look up Ralph at Dictionary.com
masc. proper name, shortened from Radulf, from Old Norse Raðulfr (Old English Rædwulf), literally "wolf-counsel," from rað "counsel" (see read (n.)) + ulfr "wolf" (see wolf (n.)). The Century Dictionary also lists it as English printers' slang for "An alleged or imagined evil spirit who does mischief in a printing house."
RAM (n.) Look up RAM at Dictionary.com
1957, acronym for random access memory (computerese).
ram (n.) Look up ram at Dictionary.com
Old English ramm "male sheep," also "battering ram" and the zodiac sign; earlier rom "male sheep," a West Germanic word (cognates: Middle Low German, Middle Dutch, Dutch, Old High German ram), of unknown origin. Perhaps [Klein] connected with Old Norse rammr "strong," Old Church Slavonic ramenu "impetuous, violent."
ram (v.) Look up ram at Dictionary.com
"to beat with a heavy implement," c. 1300, from ram (n.). Related: Rammed; ramming.
Rama Look up Rama at Dictionary.com
incarnation of Vishnu, from Sanskrit Ramah, literally "lovely," from stem of ramate "stands still, rests, is pleased."
ramada (n.) Look up ramada at Dictionary.com
"arbor, porch," 1869, from American Spanish ramada "tent, shelter," from Spanish ramada "an arbor," from rama "branch," from Vulgar Latin *rama, collective of Latin ramus "branch" (from PIE root *wrad- "branch, root").
Ramadan (n.) Look up Ramadan at Dictionary.com
ninth month of the Muslim year, 1590s, from Arabic Ramadan (Turkish and Persian ramazan), originally "the hot month," from ramida "be burnt, scorched" (compare Mishnaic Hebrew remetz "hot ashes, embers"). In the Islamic lunar calendar, it passes through all seasons in a cycle of about 33 years, but evidently originally it was a summer month.
ramble (v.) Look up ramble at Dictionary.com
mid-15c., perhaps frequentative of romen "to walk, go" (see roam), perhaps via romblen (late 14c.) "to ramble." The vowel change perhaps by influence of Middle Dutch rammelen, a derivative of rammen "copulate," "used of the night wanderings of the amorous cat" [Weekley]. Meaning "to talk or write incoherently" is from 1630s. Related: Rambled; rambling.
ramble (n.) Look up ramble at Dictionary.com
"a roving or wandering," 1650s, from ramble (v.).
rambler (n.) Look up rambler at Dictionary.com
1620s, agent noun from ramble (v.).
rambling (adj.) Look up rambling at Dictionary.com
1623, present participle adjective from ramble (v.).
Rambo Look up Rambo at Dictionary.com
used allusively from 1985, in reference to John Rambo, hero of David Morrell's novel "First Blood" (1972), popularized as portrayed by Sylvester Stallone in Hollywood movie version (1982), a U.S. Vietnam veteran, "macho and self-sufficient, and bent on violent retribution" [OED]. The family name is an old one in New Jersey and Pennsylvania, originally Swedish, sometimes said to represent Swedish place name Ramberget, or to be from French Huguenots who took refuge in Sweden.
rambunctious (adj.) Look up rambunctious at Dictionary.com
1859, earlier rumbunctious, 1830, probably altered (by influence of ram) from rumbustious.
ramekin Look up ramekin at Dictionary.com
1706, from French ramequin (late 17c.), said to be from a Germanic source (compare Middle Low German rom "cream"), from Proto-Germanic *rau(g)ma-, of uncertain origin.
ramification (n.) Look up ramification at Dictionary.com
1670s, "a branching out," from French ramification, from ramifier (see ramify). Transferred sense of "outgrowth, consequence" first recorded 1755. Related: Ramifications.
ramify (v.) Look up ramify at Dictionary.com
early 15c., "branch out," from Middle French ramifier (early 14c.), from Medieval Latin ramificare "to form branches," from Latin ramus "branch" (from PIE root *wrad- "branch, root") + combining form of facere "to make" (from PIE root *dhe- "to set, put"). Related: Ramified; ramifying.
ramjet (n.) Look up ramjet at Dictionary.com
1942, from ram (v.) + jet (n.).
rammy (adj.) Look up rammy at Dictionary.com
c. 1600, from ram (n.) + -y (2). Related: Ramminess.
ramp (n.1) Look up ramp at Dictionary.com
1778, "slope," from French rampe, back-formation from Old French verb ramper "to climb, scale, mount;" see ramp (v.). Meaning "road on or off a major highway" is from 1952, American English.
ramp (n.2) Look up ramp at Dictionary.com
"rude, boisterous girl or woman," mid-15c., perhaps from ramp (v.). Compare romp in Johnson's Dictionary (1755): "a rude, awkward, boisterous, untaught girl."
ramp (v.) Look up ramp at Dictionary.com
c. 1300, "to climb; to stand on the hind legs" (of animals), from Old French ramper "to climb, scale, mount" (12c., in Modern French "to creep, crawl"), perhaps from Frankish *rampon "to contract oneself" (compare Old High German rimpfan "to wrinkle," Old English hrimpan "to fold, wrinkle"), via notion of the bodily contraction involved in climbing [Klein], from Proto-Germanic *hrimp- "to contract oneself." Related: Ramped; ramping.
rampage (v.) Look up rampage at Dictionary.com
1715, in Scottish, probably from Middle English verb ramp "rave, rush wildly about" (c. 1300), especially of beasts rearing on their hind legs, as if climbing, from Old French ramper (see ramp (n.1), also see rampant). Related: Rampaged; rampaging.
rampage (n.) Look up rampage at Dictionary.com
1861, from rampage (v.).
rampancy (n.) Look up rampancy at Dictionary.com
1660s, from rampant + -cy.
rampant (adj.) Look up rampant at Dictionary.com
late 14c., "standing on the hind legs" (as a heraldic lion often does), thus, also, "fierce, ravenous" (late 14c.), from Old French rampant, present participle of ramper "to climb, scale, mount" (see rampage (v.)). Sense of "growing without check" (in running rampant), first recorded 1610s, probably is via the notion of "fierce disposition" or else preserves the older French sense.