transversarius

transversārĭus, a, um, adj. [transversus],

lying across , cross-. transverse : tigna, cross-beams , Caes. B. C. 2, 15.—As subst.: transversārĭa , ōrum, n. (sc. ligna), cross-beams , Vitr. 8, 6; 10, 11 fin.