Definitions for oleasterˌoʊ liˈæs tər
Random House Webster's College Dictionary
o•le•as•terˌoʊ liˈæs tər(n.)
a small thorny tree, Elaeagnus angustifolia, with gray-green leaves, fragrant yellow flowers, and oval berries.
Ref: Also called Russian olive.
Origin of oleaster:
bef. 1000; ME < L: wild olive tree
any of several shrubs of the genus Elaeagnus having silver-white twigs and yellow flowers followed by olivelike fruits
A plant in the genus Elaeagnus, especially Elaeagnus angustifolia.