Lewis & Short

druppa or drūpa (sc.) oliva = δρύππα (v. Lidd. and Scott under δρυπεπής), an over-ripe, wrinkled olive, Plin. 15, 1, 2, § 6; and absol. drupa, ae, f., id. 15, 7 7, § 26; 17, 24, 37, § 230; 19, 5, 26, § 78.