cōtĭcŭla, ae, f. dim. [cos].
I A small touchstone, a test , βάσανος, Plin. 33, 8, 43, § 126.—
II A small stone mortar for medical use, Plin. 31, 9, 45, § 100; cf. Isid. Orig. 4, 11, 7.