vane

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vane
	habit

vane noun /veɪn/
(ornithology) The flattened, web-like part of a feather, consisting of a series of barbs on either side of the shaft.	fane
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.	flygel

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