route (n.)youdaoicibaDictYouDict[route 词源字典]
early 13c., from Old French rute "road, way, path" (12c.), from Latin rupta (via) "(a road) opened by force," from rupta, fem. past participle of rumpere "to break" (see rupture (n.)). Sense of "fixed or regular course for carrying things" (as in mail route) is 1792, an extension of the meaning "customary path of animals" (early 15c.).[route etymology, route origin, 英语词源]
route (v.)youdaoicibaDictYouDict
1890, from route (n.). Related: Routed; routing.
router (n.)youdaoicibaDictYouDict
"cutter that removes wood from a groove," 1818, from rout "poke about, rummage" (1540s), originally of swine digging with the snout; a variant of root (v.1).
routine (n.)youdaoicibaDictYouDict
1670s, from French routine "usual course of action, beaten path" (16c.), from route "way, path, course" (see route (n.)) + noun suffix -ine (see -ine (1)). Theatrical or athletic performance sense is from 1926. The adjective is attested from 1817, from the noun. Related: Routinely.
routinization (n.)youdaoicibaDictYouDict
1916, noun of action from routinize (1893), from routine + -ize.
roux (n.)youdaoicibaDictYouDict
sauce made from browned butter or fat, 1813, from French (beurre) roux "browned (butter)," from roux "red, reddish-brown," from Latin russus (see russet).
rove (v.)youdaoicibaDictYouDict
"to wander with no fixed destination," 1530s (earliest sense was "to shoot arrows at a mark selected at pleasure or at random," late 15c.); possibly a Midlands dialectal variant of northern English and Scottish rave "to wander, stray," from Middle English raven, probably from Old Norse rafa "to wander, rove" (compare rave (v.)). Influenced by rover, if not a back-formation from it. Related: Roved; roving.
rover (n.)youdaoicibaDictYouDict
late 14c., "sea-robber, pirate," from Middle Dutch rover "robber, predator, plunderer," especially in zeerovere "pirate," literally "sea-robber," from roven "to rob," from Middle Dutch roof "spoil, plunder," related to Old English reaf "spoil, plunder," reafian "to reave" (see reave (v.)). Meaning "remote-controlled surface vehicle" is from 1970.
row (n.1)youdaoicibaDictYouDict
"line of people or things," Old English ræw "a row, line; succession, hedge-row," probably from Proto-Germanic *rai(h)waz (cognates: Middle Dutch rie, Dutch rij "row;" Old High German rihan "to thread," riga "line;" German Reihe "row, line, series;" Old Norse rega "string"), possibly from PIE root *rei- "to scratch, tear, cut" (cognates: Sanskrit rikhati "scratches," rekha "line"). Meaning "a number of houses in a line" is attested from mid-15c., originally chiefly Scottish and northern English. Phrase a hard row to hoe attested from 1823, American English.
row (v.)youdaoicibaDictYouDict
"propel with oars," Old English rowan "go by water, row" (class VII strong verb; past tense reow, past participle rowen), from Proto-Germanic *ro- (cognates: Old Norse roa, Dutch roeien, West Frisian roeije, Middle High German rüejen), from PIE root *ere- (1) "to row" (cognates: Sanskrit aritrah "oar;" Greek eressein "to row," eretmon "oar," trieres "trireme;" Latin remus "oar;" Lithuanian iriu "to row," irklas "oar;" Old Irish rome "oar," Old English roðor "rudder").
row (n.2)youdaoicibaDictYouDict
"noisy commotion," 1746, Cambridge University slang, of uncertain origin, perhaps related to rousel "drinking bout" (c. 1600), a shortened form of carousal. Klein suggests a back-formation from rouse (n.), mistaken as a plural (compare pea from pease).
row-house (n.)youdaoicibaDictYouDict
1913, American English, from row (n.1), which is attested from mid-15c. in sense of "a number of houses in a line," + house (n.).
rowan (n.)youdaoicibaDictYouDict
"mountain ash," 1804, from rowan-tree, rountree (1540s), northern English and Scottish, from a Scandinavian source (compare Old Norse reynir, Swedish Ronn "the rowan"), ultimately from the root of red, in reference to the berries.
There were those in this neighbourhood, long after the beginning of the present century, who believed that a slip of rowan tree carried on their person dispelled glamour, and rendered nugatory all the powers of sorcery and witchcraft. [Alexander Laing, "Lindores Abbey and the Burgh of Newburgh," Edinburgh, 1876]
rowboat (n.)youdaoicibaDictYouDict
also row-boat, 1530s, from row (v.) + boat. Similar formation in Dutch roeiboot.
rowdy (n.)youdaoicibaDictYouDict
"a rough, quarrelsome person," 1808, American English, originally "lawless backwoodsman," probably from row (n.2). The adjective is first recorded 1819. Related: Rowdily; rowdiness.
rowel (n.)youdaoicibaDictYouDict
"pointed wheel on a spur," mid-14c., from Old French roelle, roel (Modern French rouelle), "small wheel" (see roulette).
RoxanneyoudaoicibaDictYouDict
fem. proper name, from French, from Latin Roxane, from Greek Rhoxane, of Persian origin (compare Avestan raoxšna- "shining, bright"). Spelling influenced by Anne.
RoxyyoudaoicibaDictYouDict
cinema chain built by U.S. entertainment mogul Samuel L. "Roxy" Rothafel (1882-1936).
royal (adj.)youdaoicibaDictYouDict
mid-13c., "fit for a king;" late 14c., "pertaining to a king," from Old French roial "royal, regal; splendid, magnificent" (12c., Modern French royal), from Latin regalis "of a king, kingly, royal, regal," from rex (genitive regis) "king" (see rex). Meaning "thorough, total" attested from 1940s; that of "splendid, first-rate" from 1853.

Battle royal (1670s) preserves the French custom of putting the adjective after the noun (as in attorney general); the sense of the adjective here is "on a grand scale" (compare pair-royal "three of a kind in cards or dice," c. 1600). The Royal Oak was a tree in Boscobel in Shropshire in which Charles II hid himself during flight after the Battle of Worcester in 1651. Sprigs of oak were worn to commemorate his restoration in 1660.
royal (n.)youdaoicibaDictYouDict
"royal person," c. 1400, from royal (adj.). Specifically "member of the royal family" from 1774.