O / orcŭla
noun

orcŭla

gen. orcŭlae · gender feminine · decl. 1st
dim. 1. orca
a small tun; a cask
a small tun, a cask (ante- and post-class.): oleas in orculam calcato manibus siccis, Cato, R. R. 117; Auct. de Limit. p. 253 Goes.