greyyoudaoicibaDictYouDict[grey 词源字典]
grey: [OE] Grey is an ancient colour term, traceable back all the way to a prehistoric Indo- European *ghrēghwos. From this was descended West and North Germanic *grǣwaz, which produced German grau, Dutch grauw, Swedish grå, and Danish graa as well as English grey. The distinction in spelling between British grey and American gray is a comparatively recent one. Dr Johnson in his Dictionary 1755 gave gray as the main form, and even into the early 20th century it was still quite common in Britain (The Times used it, for instance). Nor is grey by any means unknown in America.
[grey etymology, grey origin, 英语词源]
greyyoudaoicibaDictYouDict
see gray.