The Collaborative International Dictionary of English v.0.48:
Locule \Loc"ule\, n. [Cf. F. locule. See Loculus.] (Zool.) A little hollow; a loculus. [1913 Webster]WordNet (r) 3.0 (2006):
locule n 1: a small cavity or space within an organ or in a plant or animal [syn: locule, loculus]