definition of
vane

[1] #1 vane n. [weathervane, weather vane, wind vane] mechanical device attached to an elevated structure; rotates freely to show the direction of the wind. wn

[2] #2 vane n. a fin attached to the tail of an arrow, bomb or missile in order to stabilize or guide it. wn

[3] #3 vane n. [blade] flat surface that rotates and pushes against air or water. wn

[4] #4 vane n. [web] the flattened weblike part of a feather consisting of a series of barbs on either side of the shaft. wn