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Vane
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
WiktionaryText
Noun
- A weather vane.
- Any of several usually relatively thin, rigid, flat, or sometimes curved surfaces radially mounted along an axis, as a blade in a turbine or a sail on a windmill, that is turned by or used to turn a fluid.
- The flattened, web-like part of a feather, consisting of a series of barbs on either side of the shaft.
- A sight on a sextant or compass.
- One of the metal guidance or stabilizing fins attached to the tail of a bomb or other missile.