trivolum

trībŭlum ( trīvŏl- ), i, n. [tero], a threshing-sledge, consisting of a wooden platform studded underneath with sharp pieces of flint or with iron teeth, Varr. L. L. 5, § 21 Müll.; id. R. R. 1, 22, 1; 1, 52, 1; Plin. 18, 30, 72, § 298; Verg. G. 1, 164. — Collat. form trībŭla, ae, f., Col. 2, 20, 4; 1, 6, 23; 12, 52, 7; Vulg. 1 Par. 20, 3.