Olea US/oʊˈli/ uncommon noun 1. evergreen trees and shrubs having oily one-seeded fruits Synonymsgenus Olea Related words Word family oleanderOleaceaeoleaceousoleaginousoleaginousnessOlealesoleander fernOleandraOleandraceaeOleandra mollisOleandra neriiformisOleariaOlearia argophyllaOlearia haastiioleasteroleaster family Broader terms dicot genus Parts Oleaceae Part of olive treeoliveblack mairewhite maire WordNet 2.1 (Princeton University). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved.