The Collaborative International Dictionary of English v.0.48:

Incarcerate \In*car"cer*ate\, v. t. [imp. & p. p.
   Incarcerated; p. pr. & vb. n. Incarcerating.] [Pref. in-
   in + L. carceratus, p. p. of carcerare to imprison, fr.
   carcer prison.]
   [1913 Webster]
   1. To imprison; to confine in a jail or prison.
      [1913 Webster]

   2. To confine; to shut up or inclose; to hem in.
      [1913 Webster]

   Incarcerated hernia (Med.), hernia in which the
      constriction can not be easily reduced.
      [1913 Webster] incarcerate

The Collaborative International Dictionary of English v.0.48:

incarcerate \in*car"cer*ate\, incarcerated \in*car"cer*at*ed\,
   a.
   Imprisoned. --Dr. H. More.
   [1913 Webster]

WordNet (r) 3.0 (2006):

incarcerate
    v 1: lock up or confine, in or as in a jail; "The suspects were
         imprisoned without trial"; "the murderer was incarcerated
         for the rest of his life" [syn: imprison, incarcerate,
         lag, immure, put behind bars, jail, jug, gaol,
         put away, remand]