The Collaborative International Dictionary of English v.0.48:

Indoctrinate \In*doc"tri*nate\, v. t. [imp. & p. p.
   Indoctrinated; p. pr. & vb. n. Indoctrinating.] [Pref.
   in- in + L. doctrina doctrine: cf. F. endoctriner.]
   1. To instruct in the rudiments or principles of learning, or
      of a branch of learning; to imbue with learning; to teach;
      -- often followed by in.
      [1913 Webster]

            A master that . . . took much delight in
            indoctrinating his young, unexperienced favorite.
                                                  --Clarendon.
      [1913 Webster]

   2. To instruct in, or imbue with, doctrines, principles or
      ideologies, especially from a specific point of view which
      may be partisan or biased; to strongly press one's own
      point of view upon.
      [PJC]

WordNet (r) 3.0 (2006):

indoctrinate
    v 1: teach doctrines to; teach uncritically; "The Moonies
         indoctrinate their disciples"

Moby Thesaurus II by Grady Ward, 1.0:

27 Moby Thesaurus words for "indoctrinate":
   alienate, beat into, brainwash, catechize, condition, corrupt,
   counterindoctrinate, discipline, drill, imbue, implant, impregnate,
   impress, inculcate, infix, infuse, inoculate, instill, instruct,
   program, propagandize, reindoctrinate, school, subvert, teach,
   train, win away