Architrave \Ar"chi*trave\, n. [F. architrave, fr. It. architrave; pref. archi- + trave beam, L. trabs.]

(Arch.)
   (a) The lower division of an entablature, or that part which rests immediately on the column, esp. in classical architecture. See Column.
   (b) The group of moldings, or other architectural member, above and on both sides of a door or other opening, especially if square in form.

Source: Webster's Revised Unabridged Dictionary (1913)