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Definition of pinion:

  1. A cogwheel with a small number of teeth, or leaves, adapted to engage with a larger wheel, or rack ( see Rack); esp., such a wheel having its leaves formed of the substance of the arbor or spindle which is its axis.
  2. A feather; a quill.
  3. A fetter for the arm.
  4. A moth of the genus Lithophane, as L. antennata, whose larva bores large holes in young peaches and apples.
  5. A wing, literal or figurative.
  6. Hence, generally, to confine; to bind; to tie up.
  7. The joint of bird's wing most remote from the body.
  8. To bind or confine the wings of; to confine by binding the wings.
  9. To disable by cutting off the pinion joint.
  10. To disable or restrain, as a person, by binding the arms, esp. by binding the arms to the body.


quill pen, fetter, feather, streamer, wing, pin feather, quill feather, flight feather, pennant, shaft, pennon, shackle, calamus, waft, quill.

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