raven (n.)youdaoicibaDictYouDict[raven 词源字典]
Old English hræfn (Mercian), hrefn; hræfn (Northumbrian, West Saxon), from Proto-Germanic *khrabanaz (cognates: Old Norse hrafn, Danish ravn, Dutch raaf, Old High German hraban, German Rabe "raven," Old English hroc "rook"), from PIE root *ker- (2), imitative of harsh sounds (cognates: Latin crepare "to creak, clatter," cornix "crow," corvus "raven;" Greek korax "raven," korone "crow;" Old Church Slavonic kruku "raven;" Lithuanian krauklys "crow").
Raven mythology shows considerable homogeneity throughout the whole area [northern regions of the northern hemisphere] in spite of differences in detail. The Raven peeps forth from the mists of time and the thickets of mythology, as a bird of slaughter, a storm bird, a sun and fire bird, a messenger, an oracular figure and a craftsman or culture hero. [Edward A. Armstrong, "The Folklore of Birds," 1958]
Old English also used hræmn, hremm. The raven standard was the flag of the Danish Vikings. The Quran connects the raven with Cain's murder of Abel; but in Christianity the bird plays a positive role in the stories of St. Benedict, St. Paul the Hermit, St. Vincent, etc. It was anciently believed to live to great old age, but the ancients also believed it wanting in parental care. The vikings, like Noah, were said to have used the raven to discover land. "When uncertain of their course they let one loose, and steered the vessel in his track, deeming that the land lay in the direction of his flight; if he returned to the ship, it was supposed to be at a distance" [Charles Swainson, "The Folk Lore and Provincial Names of British Birds," London, 1886].[raven etymology, raven origin, 英语词源]
ravening (adj.)youdaoicibaDictYouDict
"voracious," 1520s, present participle adjective from an extinct verb raven "to prey, to plunder, devour greedily" (late 14c., implied in ravener), from Old French raviner (see ravenous). It is not etymologically related to raven (n.).
ravenous (adj.)youdaoicibaDictYouDict
late 14c., "obsessed with plundering, extremely greedy," from Old French ravinos, of people, "rapacious, violent," of water, "swift-flowing," from raviner "to seize," from ravine "violent rush, robbery" (see ravine). Meaning "voracious, very hungry" is from early 15c. Related: Ravenously; ravenousness.
raver (n.)youdaoicibaDictYouDict
c. 1400, "madman," agent noun from rave (v.). Meaning "attendee at a mass party" is from 1991. In Old French, the noun resveor meant "vagabond, night-prowler."
ravine (n.)youdaoicibaDictYouDict
1760, "deep gorge," from French ravin "a gully" (1680s, from Old French raviner "to pillage, sweep down, cascade"), and from French ravine "violent rush of water, gully worn by a torrent," from Old French ravine "violent rush of water, waterfall; avalanche; robbery, rapine," both ultimately from Latin rapina "act of robbery, plundering" (see rapine); sense influenced by Latin rapidus "rapid." Middle English ravine meant "booty, plunder, robbery" from c. 1350-1500. Compare ravening.
raving (adj.)youdaoicibaDictYouDict
late 15c., "delirious, frenzied," present participle adjective from rave (v.); sense of "remarkable, fit to excite admiration" is from 1841, hence slang superlative use.
ravioli (n.)youdaoicibaDictYouDict
1610s, from Middle English raffyolys, also rafyols (late 14c.). The word probably was re-borrowed several times, most recently in 1841, from Italian ravioli, a dialectal plural of raviolo, a diminutive of an unidentified noun, perhaps of rava "turnip."
ravish (v.)youdaoicibaDictYouDict
c. 1300, "to seize (someone) by violence, carry (a person, especially a woman) away," from Old French raviss-, present participle stem of ravir "to seize, take away hastily," from Vulgar Latin *rapire, from Latin rapere "to seize and carry off, carry away suddenly, hurry away" (see rapid). Meaning "to commit rape upon" is recorded from mid-15c. Related: Ravished; ravishing.
ravishing (n.)youdaoicibaDictYouDict
"act of plundering," c. 1300, verbal noun from ravish (v.).
ravishing (adj.)youdaoicibaDictYouDict
mid-14c., "ravenous;" early 15c., "enchanting;" present participle adjective from ravish (v.). The figurative notion is of "carrying off from earth to heaven." Related: Ravishingly.
ravishment (n.)youdaoicibaDictYouDict
1530s, from Middle French ravissement (14c.), from ravir (see ravish).
raw (adj.)youdaoicibaDictYouDict
Old English hreaw "uncooked, raw," from Proto-Germanic *khrawaz (cognates: Old Norse hrar, Danish raa, Old Saxon hra, Middle Dutch rau, Dutch rauw, Old High German hrawer, German roh), from PIE root *kreue- (1) "raw flesh" (cognates: Sanskrit kravih "raw flesh," krura- "bloody, raw, hard;" Greek kreas "flesh;" Latin crudus "not cooked," cruor "thick blood;" Old Irish cru, Lithuanian kraujas, Old Church Slavonic kruvi "blood;" Old English hrot "thick fluid, serum").

Meaning "tender, sore" is from late 14c.; of persons, "inexperienced" from 1560s; of weather, "damp and chilly" first recorded 1540s. Related: Rawly; rawness. Raw material is from 1796, with sense of "in a rudimental condition, unfinished." Phrase in the raw "naked" (1921) is from the raw "exposed flesh," attested from 1823. Raw deal "harsh treatment" attested by 1893.
raw-boned (adj.)youdaoicibaDictYouDict
"having little flesh on the bones, gaunt," from raw (adj.) + bone (n.).
raw-head (n.)youdaoicibaDictYouDict
name of a nursery specter or "scare-child," usually coupled with bloody-bones, early 16c., from raw (adj.) + head (n.).
rawhide (n.)youdaoicibaDictYouDict
"material cut from untanned skins of cattle," 1650s, from raw (adj.) + hide (n.1).
ray (n.1)youdaoicibaDictYouDict
"beam of light," c. 1300, from Old French rai (nominative rais) "ray (of the sun), spoke (of a wheel); gush, spurt," from Latin radius "ray, spoke, staff, rod" (see radius). Not common before 17c. [OED]; of the sun, usually in reference to heat (beam being preferred for light). Science fiction ray-gun is first recorded 1931 (but the Martians had a Heat ray weapon in H.G. Wells' "War of the Worlds," 1898).
ray (n.2)youdaoicibaDictYouDict
type of fish related to sharks, early 14c., from French raie (13c.), from Latin raia, of unknown origin.
RaymondyoudaoicibaDictYouDict
masc. proper name, from Old French Raimund, from Frankish *Raginmund "counsel-protection" or "might-protection," from ragin "counsel, might" + mund "hand, protection" (cognate with Old High German munt, Old English mund, second element in Edmund, Sigismund, etc.), from PIE *man- "hand" (see manual (adj.)).
rayon (n.)youdaoicibaDictYouDict
1924, chosen by National Retail Dry Goods Association of America, probably from French rayon "beam of light, ray," from rai (see ray (n.1)), which also was used in Middle English as a name for a type of cloth. So called because it is shiny. A more marketable alternative than the original patented name, artificial silk (1884), or the intervening attempt, Glos, which was "killed by ridicule" ["Draper's Record," June 14, 1924].
Raza (n.)youdaoicibaDictYouDict
in La Raza, literally "the race," 1964, from American Spanish (see race (n.2)), "designating the strong sense of racial and cultural identity held by Mexican-Americans" [OED].