oleaceus

ŏlĕācĕus, a, um, adj. [oleum],

• of the olive-tree; hence, like oil, oily (Plinian): liquor, Plin. 35, 15, 51, § 179 (al. oleique): folia oleacea (al. folia violae), id. 21, 4, 10, § 18.