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vane (vān)
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n.
1. A weathervane.
2. 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 moved by or used to move a fluid.
3. The flattened, weblike part of a feather, consisting of a series of barbs on either side of the shaft.
4.
a. The movable target on a leveling rod.
b. A sight on a quadrant or compass.
5. One of the metal guidance or stabilizing fins attached to the tail of a bomb or other missile.

[Middle English fane, vane, from Old English fana, flag; see pan- in the Appendix of Indo-European roots.]

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2017 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 
Vane (vān), Sir Henry or Harry 1613-1662.
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English politician and colonial administrator who was governor of Massachusetts (1636-1637) and a leading Parliamentarian during the English Civil War. He was tried and executed for high treason after the restoration of the monarchy.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2017 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 

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