tubulus

tŭbŭlus, i, m. dim. [tubus], a small pipe or tube, a water-pipe.

I Lit., Varr. R. R. 1, 8, 4; Vitr. 8, 7; Plin. 35, 12, 46, § 159.— A smoke - pipe , Dig. 8, 2, 13.—

II Transf., a bar of metal , a pig , ingot , Plin. 33, 6, 35, § 106.

Tubulus
Tŭbŭlus, i, m., a Roman cognomen in the gens Hostilia: L. Hostilius Tubulus, a praetor A. U. C. 6...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.