pinion

2 [pin-yuhn]
noun
1.
the distal or terminal segment of the wing of a bird consisting of the carpus, metacarpus, and phalanges.
2.
the wing of a bird.
3.
a feather.
4.
the flight feathers collectively.
verb (used with object)
5.
to cut off the pinion of (a wing) or bind (the wings), as in order to prevent a bird from flying.
6.
to disable or restrain (a bird) in such a manner.
7.
to bind (a person's arms or hands) so they cannot be used.
8.
to disable (someone) in such a manner; shackle.
9.
to bind or hold fast, as to a thing: to be pinioned to one's bad habits.

Origin:
1400–50; late Middle English pynyon < Middle French pignon wing, pinion < Vulgar Latin *pinniōn (stem of pinniō), derivative of Latin pinna feather, wing, fin

unpinioned, adjective
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World English Dictionary
pinion1 (ˈpɪnjən)
 
n
1.  poetic chiefly a bird's wing
2.  the part of a bird's wing including the flight feathers
 
vb
3.  to hold or bind (the arms) of (a person) so as to restrain or immobilize him
4.  to confine or shackle
5.  to make (a bird) incapable of flight by removing that part of (the wing) from which the flight feathers grow
 
[C15: from Old French pignon wing, from Latin pinna wing]

pinion2 (ˈpɪnjən)
 
n
a cogwheel that engages with a larger wheel or rack, which it drives or by which it is driven
 
[C17: from French pignon cogwheel, from Old French peigne comb, from Latin pecten comb; see pecten]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

pinion
"wing joint," c.1440, from M.Fr. pignon (c.1400), from V.L. *pinnionem, from L. penna "wing" (see pen (1)). Verb meaning "disable by binding the arms" is from 1558, older than lit. sense "cut the pinions of a wing to prevent a bird from flying" (1577).

pinion
"small gear with teeth" (as in rack and pinion), 1659, from Fr. pignon, from O.Fr. pignon "crenellation, battlement," aug. of L. pinna "battlement, pinnacle;" confused with (but perhaps ult. a variant of) penna "wing, feather, peak" (see pen (1)).
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
The limbs of each of the prisoners were now pinioned.
And the guiding hand may soon find itself pinioned behind bars.
Pinioned by his crippling neurological disease, he could no longer walk, read
  or write.
My neck was stiff, too, so stiff that it was pinioned to the pillow.
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