Lewis & Short

ŏlĕāgĭnĕus, ŏlĕāgĭnĭus, and ŏlĕ-āgĭnus, a, um, adj. [olea].

  1. I. Of or belonging to the olive-tree (for the class. olearius): oleagineum seminarium, Cato, R. R. 48: radix, Verg. G. 2, 31: virgulae, Nep. Thras. 4, 1: oleagineis coronis ministri triumphantium utebantur, quod Minerva dea belli esse putabatur, Paul. ex Fest. p. 192 Müll.
  2. II. Resembling an olive-tree or an olive: vitis oleaginia, Col. 3, 2, 27 dub.: uva, Plin. 14, 3, 4, § 38.
    1. B. Olive-colored: berylli oleagini, Plin. 37, 5, 20, § 77.