1.Definition: a fin attached to the tail of an arrow, bomb or missile in order to stabilize or guide it

Category: Objects

2.Definition: flat surface that rotates and pushes against air or water

Related Noun(s):blade

Category: Objects

3.Definition: mechanical device attached to an elevated structure; rotates freely to show the direction of the wind

Related Noun(s):weathervane

Category: Objects

4.Definition: the flattened weblike part of a feather consisting of a series of barbs on either side of the shaft

Related Noun(s):web

Category: Animals