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pinion1 definition

pin·ion (pinyən)

noun

a small gear, the teeth of which fit into those of a larger gear or those of a rack

Etymology: Fr pignon < VL *pinnio < L pinna, bucket of a paddle wheel, lit., feather, var. of penna (see pen): assoc. in MFr with peigner, to comb: see peignoir

pinion2 definition

pin·ion (pinyən)

noun

  1. the last bony section of a bird's wing
  2. Old Poet. a wing
  3. Old Poet. any wing feather

Etymology: ME pynyon < OFr pignon, var. of penon < L pinna, penna: see pen

transitive verb

  1. to cut off or bind the pinions of (a bird) to keep it from flying
  2. to bind (the wings)
  3. to disable or impede by binding the arms of
  4. to confine or shackle

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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