orificium

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.

ōrĭfĭcĭum, ii, n. [1. os-facio],

an opening , orifice (post-class.): ventris sunt duo orificia, Macr. S. 7, 4: cistulae, Ap. Met. 9, 40, 30; 11, 11, 20.