The Collaborative International Dictionary of English v.0.48:

Coop \Coop\, v. t. [imp. & p. p. Cooped; p. pr. & vb. n.
   Cooping.]
   To confine in a coop; hence, to shut up or confine in a
   narrow compass; to cramp; -- usually followed by up,
   sometimes by in.
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         The Trojans cooped within their walls so long.
                                                  --Dryden.
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         The contempt of all other knowledge . . . coops the
         understanding up within narrow bounds.   --Locke.
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   2. To work upon in the manner of a cooper. [Obs.] "Shaken
      tubs . . . be new cooped." --Holland.

   Syn: To crowd; confine; imprison.
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