Vanë
WordNet
noun
(1) The flattened weblike part of a feather consisting of a series of barbs on either side of the shaft
(2) Flat surface that rotates and pushes against air or water
(3) A metal fin attached to the tail of a bomb or missile in order to stabilize or guide it
(4) Mechanical device attached to an elevated structure; rotates freely to show the direction of the wind