The Collaborative International Dictionary of English v.0.48:

Trave \Trave\, n. [Through French, fr. L. trabs, trabis, a beam;
   cf. OF. tref a beam, also F. travail a frame to confine a
   horse, OE. trave, trevys, travise, It. travaglio, F.
   trav['e]e the space between two beams.]
   1. (Arch.) A crossbeam; a lay of joists. --Maundrell.
      [1913 Webster]

   2. A wooden frame to confine an unruly horse or ox while
      shoeing.
      [1913 Webster]

            She sprung as a colt doth in the trave. --Chaucer.
      [1913 Webster]

WordNet (r) 3.0 (2006):

trave
    n 1: a horizontal beam that extends across something [syn:
         trave, traverse, crossbeam, crosspiece]