Introvert /(?)/

In·tro·vert

Introvert

v. t.

imp. & p. p. Introverted; p. pr. & vb. n. Introverting

  1. To turn or bend inward.
  2. To look within; to introspect.

Introvert

n.
  1. A person who is introverted; one concerned predominantly with himself or his own feelings. Contrasted with extrovert.
  2. A person who is shy.
  3. A part that can be introverted{1}. (Zool.)