Paries

·noun The triangular middle part of each segment of the shell of a barnacle.

paries
părĭēs, ĕtis, m. (in Verg. A. 2, 442; 5, 589, pārietibus, quadrisyl.; see Carey's Lat. Prosody, § 47...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
paries
pariēs etis (parietibus, quadrisyl., V.), m a wall (of a building): domesticis me parietibus vix tu...

An Elementary Latin Dictionary