yawl (n.)youdaoicibaDictgodict[yawl 词源字典]
type of ship's boat, 1660s, apparently from Middle Low German jolle or Dutch jol "a Jutland boat" (according to a 1708 source), of uncertain origin. Also borrowed into French (yole), Italian (jolo), Russian (yal).[yawl etymology, yawl origin, 英语词源]
yawn (v.)youdaoicibaDictgodict
c. 1300, yenen, yonen, from Old English ginian, gionian "open the mouth wide, yawn, gape," from Proto-Germanic *gin- (cognates: Old Norse gina "to yawn," Dutch geeuwen, Old High German ginen, German gähnen "to yawn"), from PIE *ghai- "to yawn, gape" (cognates: Old Church Slavonic zijajo "to gape," Lithuanian žioju, Czech zivati "to yawn," Greek khainein, Latin hiare "to yawn, gape," Sanskrit vijihite "to gape, be ajar"). Modern spelling is from 16c. Related: Yawned; yawning.
yawn (n.)youdaoicibaDictgodict
"act of yawning," 1690s, from yawn (v.). Meaning "boring thing" is attested from 1889.
yawner (n.)youdaoicibaDictgodict
1680s, agent noun from yawn (v.). Meaning "boring thing" is 1942, American English colloquial (yawn (n.) in this sense is attested from 1889).
yawp (v.)youdaoicibaDictgodict
c. 1300, yolpen, probably echoic variant of yelpen (see yelp). Related: Yawped; yawping. The noun, in reference to speech, is recorded from 1835, now used chiefly in conscious echo of Whitman (1855).
yaws (n.)youdaoicibaDictgodict
contagious skin disease, 1670s, from Carib yaya, the native name for it.
"this," as in yay big "this big," 1950s, perhaps from yea "yes" in its sense of "even, truly, verily." "a sort of demonstrative adverb used with adjectives of size, height, extent, etc., and often accompanied by a hand gesture indicating size" [DAS].
Old English gicliopad; from y- + past participle of cleopian, cpipian "to speak, call; summon, invoke; implore" (see clepe).
ye (pron.)youdaoicibaDictgodict
Old English ge, nominative plural of 2nd person pronoun þu (see thou); cognate with Old Frisian ji, Old Saxon gi, Middle Dutch ghi, Dutch gij. Cognate with Lithuanian jus, Sanskrit yuyam, Avestan yuzem, Greek hymeis.

Altered, by influence of we, from an earlier form that was similar to Gothic jus "you (plural)" (see you). The -r- in Old Norse er, German ihr probably is likewise from influence of their respective 1st person plural pronouns (Old Norse ver, German wir).
ye (article)youdaoicibaDictgodict
old or quaintly archaic way of writing the, in which the -y- is a 16c. graphic alteration of þ, an Old English character (generally called "thorn," originally a Germanic rune; see th-) that represented the -th- sound (as at the beginning of thorn). The characters for -y- and -þ- so closely resembled each other in Old English and early Middle English handwriting that a dot had to be added to the -y- to keep them distinct. In late 15c., early printers in English, whose types were founded on the continent, did not have a þ in their sets, so they substituted y as the letter that looked most like it when setting type. But in such usages it was not meant to be pronounced with any of the sounds associated with -y-, but still as "-th-." Ye for the (and yt for that) continued in manuscripts through 18c. Revived 19c. as a deliberate antiquarianism; the Ye Olde _____ construction was being mocked by 1896.
yea (adv.)youdaoicibaDictgodict
Old English gea (West Saxon), ge (Anglian) "so, yes," from Proto-Germanic *ja-, *jai-, a word of affirmation (cognates: German, Danish, Norwegian, Swedish ja), from PIE *yam-, from pronominal stem *i- (see yon). As a noun, "affirmation, affirmative vote," from early 13c.
American English, colloquial, by 1863, from drawling pronunciation of yes.
yean (v.)youdaoicibaDictgodict
Old English eanian "to bring forth" (young), especially in reference to sheep or goats, from Proto-Germanic *aunon (cognate with Dutch oonen), from PIE *agwh-no- "lamb" (cognates: Greek amnos "lamb," Latin agnus, Old Church Slavonic agne, Old Irish van, Welsh oen). Yeanling "young lamb, kid" is recorded from 1630s.
yeanling (n.)youdaoicibaDictgodict
"lamb, kid," 1630s, from yean + -ling.
year (n.)youdaoicibaDictgodict
Old English gear (West Saxon), ger (Anglian) "year," from Proto-Germanic *jeram "year" (cognates: Old Saxon, Old High German jar, Old Norse ar, Danish aar, Old Frisian ger, Dutch jaar, German Jahr, Gothic jer "year"), from PIE *yer-o-, from root *yer- "year, season" (cognates: Avestan yare (nominative singular) "year;" Greek hora "year, season, any part of a year," also "any part of a day, hour;" Old Church Slavonic jaru, Bohemian jaro "spring;" Latin hornus "of this year;" Old Persian dušiyaram "famine," literally "bad year"). Probably originally "that which makes [a complete cycle]," and from verbal root *ei- meaning "to do, make."
year-long (adj.)youdaoicibaDictgodict
also yearlong, 1813, from year + -long.
year-round (adj.)youdaoicibaDictgodict
1917, from (all) the year round; see year (n.) + round (adj.). As an adverb from 1948.
yearbook (n.)youdaoicibaDictgodict
also year-book, 1580s, "book of reports of cases in law-courts for that year," from year + book (n.). Meaning "book of events and statistics of the previous year" is recorded from 1710. Sense of "graduating class album" is attested from 1926, American English.
yearling (n.)youdaoicibaDictgodict
"animal a year old or in its second year," mid-15c., from year + -ling. Year-old (n.) in this sense is from 1530s.
yearly (adj.)youdaoicibaDictgodict
Old English gearlic "yearly, of the year, annual;" see year + -ly (1).