caterwaulyoudaoicibaDictYouDict[caterwaul 词源字典]
caterwaul: [14] The earliest known use of this word comes in Chaucer’s Wife of Bath’s Prologue 1386: ‘If the cat’s skin be slick and grey, forth she will, ere any day be dawned, to show her skin, and go a-caterwauling’. The first element of the word is generally accepted to be cat, while the second (in Middle English it was usually -wawe or -wrawe) is presumably onomatopoeic, imitating the sound of a cat wailing or yowling. It is not clear whether it was a purely native creation, or whether English borrowed it from Low German katerwaulen (where kater means ‘tom cat’).
[caterwaul etymology, caterwaul origin, 英语词源]
dawn (v.)youdaoicibaDictYouDict
c. 1200, dauen, "to dawn, grow light," shortened or back-formed from dauinge, dauing "period between darkness and sunrise," (c. 1200), from Old English dagung, from dagian "to become day," from Proto-Germanic *dagaz "day" (cognates: German tagen "to dawn;" see day (n.)). Probably influenced by Scandinavian cognates (Danish dagning, Old Norse dagan "a dawning"). Related: Dawned; dawning.