The Collaborative International Dictionary of English v.0.48:

Introduce \In`tro*duce"\, v. t. [imp. & p. p. Introduced; p.
   pr. & vb. n. Introducing.] [L. introducere, introductum;
   intro within + ducere to lead. See Intro-, and Duke.]
   [1913 Webster]
   1. To lead or bring in; to conduct or usher in; as, to
      introduce a person into a drawing-room.
      [1913 Webster]

   2. To put (something into a place); to insert; as, to
      introduce the finger, or a probe.
      [1913 Webster]

   3. To lead to and make known by formal announcement or
      recommendation; hence, to cause to be acquainted; as, to
      introduce strangers; to introduce one person to another.
      [1913 Webster]

   4. To bring into notice, practice, cultivation, or use; as,
      to introduce a new fashion, method, or plant.
      [1913 Webster]

   5. To produce; to cause to exist; to induce. [Obs.]
      [1913 Webster]

            Whosoever introduces habits in children, deserves
            the care and attention of their governors. --Locke.
      [1913 Webster]

   6. To open to notice; to begin; to present; as, he introduced
      the subject with a long preface.

   Syn: To bring in; usher in; insert; begin; preface.
        [1913 Webster]

WordNet (r) 3.0 (2006):

introduce
    v 1: cause to come to know personally; "permit me to acquaint
         you with my son"; "introduce the new neighbors to the
         community" [syn: introduce, present, acquaint]
    2: bring something new to an environment; "A new word processor
       was introduced" [syn: introduce, innovate]
    3: introduce; "Insert your ticket here" [syn: insert,
       enclose, inclose, stick in, put in, introduce]
    4: bring in a new person or object into a familiar environment;
       "He brought in a new judge"; "The new secretary introduced a
       nasty rumor" [syn: bring in, introduce]
    5: bring in or establish in a new place or environment;
       "introduce a rule"; "introduce exotic fruits"
    6: put or introduce into something; "insert a picture into the
       text" [syn: insert, infix, enter, introduce]
    7: bring before the public for the first time, as of an actor,
       song, etc. [syn: introduce, bring out]
    8: put before (a body); "introduce legislation"
    9: furnish with a preface or introduction; "She always precedes
       her lectures with a joke"; "He prefaced his lecture with a
       critical remark about the institution" [syn: precede,
       preface, premise, introduce]
    10: be a precursor of; "The fall of the Berlin Wall ushered in
        the post-Cold War period" [syn: inaugurate, usher in,
        introduce]

Moby Thesaurus II by Grady Ward, 1.0:

140 Moby Thesaurus words for "introduce":
   acquaint, add, admit, advance, announce, begin, blaze the trail,
   break the trail, bring before, bring forward, bring in, bring out,
   bring up, broach, christen, coin, commend to attention, discover,
   do the honors, drag in, ease in, edge in, establish, fill in,
   float, foist in, forerun, found, fudge in, give a knockdown,
   give an introduction, go before, guide, herald, implant in, import,
   inaugurate, induct, infuse, initiate, inject, inject in, inlay,
   inlet, innovate, inoculate, insert, insert in, inset, insinuate,
   insinuate in, install, instill, institute, intercalate,
   interjaculate, interject, interpolate, interpose, intervene,
   introduce in, introduce new blood, intromit, intrude, invent,
   launch, lay before, lead, lift up, lug in, make a motion,
   make acquainted, make innovations, make known, mention, moot, move,
   neologize, offer, offer a resolution, open up, organize, originate,
   perfuse, pioneer, pop in, pose, postulate, pre-educate, preamble,
   precede, preface, prefer, prefix, prelude, premise, present,
   prologize, propose, proposition, propound, put between, put forth,
   put forward, put in, put it to, quaint, raise, recommend,
   revolutionize, ring in, run in, sandwich, set agoing, set before,
   set forth, set in, set on foot, set up, slip in, smuggle in,
   squeeze in, start, start going, start up, stick in, submit,
   suggest, throw in, thrust in, tuck in, turn on, unveil, usher,
   usher in, ventilate, wedge in, whip in, work in, worm in