Source : Webster's Revised Unabridged Dictionary (1913)

Intrude \In*trude"\, v. t. [imp. & p. p. {Intruded}; p. pr. &
   vb. n. {Intruding}.]
   1. To thrust or force (something) in or upon; especially, to
      force (one's self) in without leave or welcome; as, to
      intrude one's presence into a conference; to intrude one's
      opinions upon another.

   2. To enter by force; to invade. [Obs.]

            Why should the worm intrude the maiden bud? --Shak.

   3. (Geol.) The cause to enter or force a way, as into the
      crevices of rocks.

   Syn: To obtrude; encroach; infringe; intrench; trespass. See
        {Obtrude}.

Intruded \In*trud"ed\, p. a. (Geol.)
   Same as {Intrusive}.