a flat blade that is moved by wind or water and is part of the machines in a windmill, etc. (风车等的)叶片,翼,轮叶 The windmill’s sails are wooden vanes whose angle can be adjusted from inside the mill. 风车的帆是木制的叶片,其角度可以从风车内部调节。
Word Originlate Middle English: dialect variant of obsolete fane ‘banner’, of Germanic origin.