C / cūlus
noun

cūlus

gen. cūli · gender masculine · decl. 2nd
perh. kindr. with κοῖλος, of a curving form; cf. 1. anus
the posteriors, fundament
the posteriors, fundament, Cat. 23, 19; 33, 4; 97, 2; Mart. 3, 98, 1.