R / rūpīna
noun

rūpīna

gen. rūpīnae · gender feminine · decl. 1st
a cleft of a rock; a rocky chasm
a cleft of a rock, a rocky chasm (Appuleian), App. M. 6, p. 184, 16; 7, p. 193 fin.; id. Flor. 2, p. 348 med.