C / călўcŭlus
noun

călўcŭlus

gen. călўcŭli · gender masculine · decl. 2nd
a small flower-bud; the cup; calyx of a flower
a small flower-bud, the cup or calyx of a flower, Plin. 20, 19, 78, § 205; 27, 5, 20, § 37; App. M. 4, p. 143, 16.—
the outer skin; hide by extension
Transf., the outer skin, hide of animals: echinorum, App. Mag. 35, p. 297, 4.