pinion
1Machinery.
a gear with a small number of teeth, especially one engaging with a rack or larger gear.
a shaft or spindle cut with teeth engaging with a gear.
Metalworking. a gear driving a roll in a rolling mill.
Origin of pinion
1Other words from pinion
- pin·ion·less, adjective
- pin·ion·like, adjective
Other definitions for pinion (2 of 2)
the distal or terminal segment of the wing of a bird consisting of the carpus, metacarpus, and phalanges.
a feather.
the flight feathers collectively.
Chiefly Literary. the wing of a bird.
to cut off the pinion of (a wing) or bind (the wings), as in order to prevent a bird from flying.
to disable or restrain (a bird) in such a manner.
to bind (a person's arms or hands) so they cannot be used.
to disable (someone) in such a manner; shackle.
to bind or hold fast, as to a thing: to be pinioned to one's bad habits.
Origin of pinion
2Other words from pinion
- un·pin·ioned, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
British Dictionary definitions for pinion (1 of 2)
/ (ˈpɪnjən) /
mainly poetic a bird's wing
the part of a bird's wing including the flight feathers
to hold or bind (the arms) of (a person) so as to restrain or immobilize him
to confine or shackle
to make (a bird) incapable of flight by removing that part of (the wing) from which the flight feathers grow
Origin of pinion
1British Dictionary definitions for pinion (2 of 2)
/ (ˈpɪnjən) /
a cogwheel that engages with a larger wheel or rack, which it drives or by which it is driven
Origin of pinion
2Collins 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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