[treiv]
[建]横木[梁]
天花板格

[ noun ]
a horizontal beam that extends across something
<noun.artifact>

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.

2. A wooden frame to confine an unruly horse or ox while
shoeing.

She sprung as a colt doth in the trave. --Chaucer.