Source : Webster's Revised Unabridged Dictionary (1913)

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}.]
   1. To lead or bring in; to conduct or usher in; as, to
      introduce a person into a drawing-room.

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

   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.

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

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

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

   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.