vaneyoudaoicibaDictYouDict[vane 词源字典]
vane: [15] Vane is an alteration of an earlier fane ‘flag, weather-cock’, which was descended from Old English fana. This in turn came from a prehistoric Germanic *fanon. The change from fane to vane took place in southwest England, where initial f and s have a tendency to become v and z (as in zyder for cyder).
[vane etymology, vane origin, 英语词源]
vane (n.)youdaoicibaDictYouDict
"plate metal wind indicator," early 15c., southern England alteration (see V) of fane "flag, banner."