The Collaborative International Dictionary of English v.0.48:

Implicate \Im"pli*cate\, v. t. [imp. & p. p. Implicated; p.
   pr. & vb. n. Implicating.] [L. implicatus, p. p. of
   implicare to involve; pref. im- in + plicare to fold. See
   Employ, Ply, and cf. Imply, Implicit.]
   1. To infold; to fold together; to interweave.
      [1913 Webster]

            The meeting boughs and implicated leaves. --Shelley.
      [1913 Webster]

   2. To bring into connection with; to involve; to connect; --
      applied to persons, in an unfavorable sense; as, the
      evidence implicates many in this conspiracy; to be
      implicated in a crime, a discreditable transaction, a
      fault, etc.
      [1913 Webster]

WordNet (r) 3.0 (2006):

implicate
    v 1: bring into intimate and incriminating connection; "He is
         implicated in the scheme to defraud the government"
    2: impose, involve, or imply as a necessary accompaniment or
       result; "What does this move entail?" [syn: entail,
       implicate]

Moby Thesaurus II by Grady Ward, 1.0:

78 Moby Thesaurus words for "implicate":
   absorb, affect, allegorize, allude to, assail, associate, assume,
   attack, ball up, bring, bring to mind, call for, catch up in,
   censure, complicate, comprise, concern, confound, confuse, connect,
   connote, contain, criminate, cry out against, cry out on,
   cry shame upon, draw in, embarrass, embrangle, embroil, engage,
   enmesh, ensnare, entail, entangle, entrap, foul up, hint, imply,
   import, impugn, include, incriminate, inculpate, infer, insinuate,
   interest, intimate, involve, knot, lead to, louse up, mean,
   mean to say, mess up, mire, mix up, muck up, muddle, perplex,
   point indirectly to, presume, presuppose, ramify, ravel, require,
   screw up, snarl, snarl up, subsume, suck into, suggest, suppose,
   suspect, take, take for granted, take in, tangle