cylindrus, dri, m., = κύλινδρος, a cylinder.
I Prop., Cic. N. D. 1, 10, 24; id. Fat. 19, 41.—
II Meton.
A A cylindrical stone for levelling the ground, a roller , etc., Cato R. R. 129; Verg. G. 1, 178; Plin. 19, 8, 46, § 158; Vitr. 10, 6 al.—
B A precious stone ground off in the form of a cylinder , Plin. 37, 5, 20, § 78; 37, 8, 34, § 113; Juv. 2, 61 al.