Lewis Short
(adjective) : ŏlĕārĭus, a, um, id.
* Of or belonging to oil, oil- (class.): cella vinaria, olearia,Cato, R. R. 3; Cic. Sen. 16, 56: dolia,Plin. 15, 8, 8, § 33: mercatores,Dig. 50, 4, 5.
* Subst.: ŏlĕārĭus, ii, m., an oilgrinder or oil-seller: in velabro olearii,Plaut. Capt. 3, 1, 29: diligentes,Col. 12, 50, 13.
Charlton T. Lewis, Charles Short, A Latin Dictionary