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vane

[veyn] /veɪn/
noun
2.
a blade, plate, sail, etc., in the wheel of a windmill, to be moved by the air.
3.
any of a number of blades or plates attached radially to a rotating drum or cylinder, as in a turbine or pump, that move or are moved by a fluid, as steam, water, hot gases, or air.
4.
a person who is readily changeable or fickle.
5.
Aerospace.
  1. any fixed or movable plane surface on the outside of a rocket providing directional control while the rocket is within the atmosphere.
  2. a similar plane surface located in the exhaust jet of a reaction engine, providing directional control while the engine is firing.
6.
Ornithology. the web of a feather.
7.
Navigation, Surveying. either of two fixed projections for sighting an alidade or the like.
8.
Archery. feather (def 5).
Origin
1100
before 1100; Middle English; Old English fana flag; cognate with German Fahne flag, Gothic fana segment of cloth; cf. gonfanon
Related forms
vaned, adjective
vaneless, adjective
multivane, adjective
Can be confused
vain, vane, vein.

Vane

[veyn] /veɪn/
noun
1.
Sir Henry (Sir Harry Vane) 1613–62, British statesman and author.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for vane
  • So it's vane to talk about blood since it's wrong to judge national background on this single factor.
  • Scan a feather and enlarge it to poster size and you'll see each vane and barb.
  • He's a bombast anyway, a vane orator, the way so many pol's are.
  • The final effect was stately: a white building with a blue and white cupola topped by a weather vane.
  • vane anemometers are sensitive to different measuring techniques and the proximity of the observer.
  • vane: the smooth feather surface formed by the interlocked pennaceous barbs.
British Dictionary definitions for vane

vane

/veɪn/
noun
1.
Also called weather vane, wind vane. a flat plate or blade of metal mounted on a vertical axis in an exposed position to indicate wind direction
2.
any one of the flat blades or sails forming part of the wheel of a windmill
3.
any flat or shaped plate used to direct fluid flow, esp a stator blade in a turbine, etc
4.
a fin or plate fitted to a projectile or missile to provide stabilization or guidance
5.
(ornithol) the flat part of a feather, consisting of two rows of barbs on either side of the shaft
6.
(surveying)
  1. a sight on a quadrant or compass
  2. the movable marker on a levelling staff
Derived Forms
vaned, adjective
vaneless, adjective
Word Origin
Old English fana; related to Old Saxon, Old High German fano, Old Norse fani, Latin pannus cloth

Vane

/veɪn/
noun
1.
Sir Henry, known as Sir Harry Vane. 1613–62, English Puritan statesman and colonial administrator; governor of Massachusetts (1636–37). He was executed for high treason after the Restoration
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for vane
n.

"wind indicator," early 15c., southern England alteration (see V) of fane.

Online Etymology Dictionary, © 2010 Douglas Harper
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vane in Medicine

Vane (vān), John Robert. Born 1927.

British pharmacologist. He shared a 1982 Nobel Prize for research on prostaglandins.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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vane in Science
vane
  (vān)   
The flattened, weblike part of a feather, consisting of a series of barbs on either side of the rachis.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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