pin·ion /ˈpɪnjən/
 鳥翼,翅膀,羽毛,小齒輪(vt.)剪斷翼尖,綁住…兩臂


 Pin·ion n. Zool. A moth of the genus Lithophane, as Lithophane antennata, whose larva bores large holes in young peaches and apples.


 Pin·ion, n.
 1. A feather; a quill.
 2. A wing, literal or figurative.
    Swift on his sooty pinions flits the gnome.   --Pope.
 3. The joint of bird's wing most remote from the body.
 4. A fetter for the arm.
 5. Mech. 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.
 Lantern pinion. See under Lantern.
 Pinion wire, wire fluted longitudinally, for making the pinions of clocks and watches. It is formed by being drawn through holes of the shape required for the leaves or teeth of the pinions.


 Pin·ion v. t. [imp. & p. p. Pinioned p. pr. & vb. n. Pinioning.]
 1. To bind or confine the wings of; to confine by binding the wings.
 2. To disable by cutting off the pinion joint.
 3. To disable or restrain, as a person, by binding the arms, esp. by binding the arms to the body.
    Her elbows pinioned close upon her hips.   --Cowper.
 4. Hence, generally, to confine; to bind; to tie up. “Pinioned up by formal rules of state.”

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 pinion
      n 1: a gear with a small number of teeth designed to mesh with a
           larger wheel or rack
      2: any of the larger wing or tail feathers of a bird [syn: {flight
         feather, quill, quill feather]
      3: wing of a bird [syn: pennon]
      v 1: bind the arms of [syn: shackle]
      2: cut the wings off (of birds)