The Collaborative International Dictionary of English v.0.48:

Imprison \Im*pris"on\, v. t. [imp. & p. p. Imprisoned; p. pr.
   & vb. n. Imprisoning.] [OE. enprisonen, OF. enprisoner, F.
   emprisonner; pref. en- (L. in) + F. & OF. prison. See
   Prison.]
   1. To put in prison or jail; To arrest and detain in custody;
      to confine.
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            He imprisoned was in chains remediless. --Spenser.
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   2. To limit, restrain, or confine in any way.
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            Try to imprison the resistless wind.  --Dryden.

   Syn: To incarcerate; confine; immure.
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