mechanical device attached to an elevated structure; rotates freely to show the direction of the wind
[ Syn: weathervane , weather vane , wind vane ]
a fin attached to the tail of an arrow, bomb or missile in order to stabilize or guide it
flat surface that rotates and pushes against air or water
[ Syn: blade ]
the flattened weblike part of a feather consisting of a series of barbs on either side of the shaft
[ Syn: web ]