"vanes" in the noun sense
1. weathervane, weather vane, vane, wind vane
mechanical device attached to an elevated structure rotates freely to show the direction of the wind
a fin attached to the tail of an arrow, bomb or missile in order to stabilize or guide it
3. blade, vane
flat surface that rotates and pushes against air or water
4. vane, web
the flattened weblike part of a feather consisting of a series of barbs on either side of the shaft
Source: WordNet® (An amazing lexical database of English)
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