Main Entry: ole·as·ter

Pronunciation: \ˈō-lē-ˌas-tər, ˌō-lē-ˈ\

Function: noun

Etymology: Middle English, from Latin, from olea

Date: 14th century

: any of several plants (genus Elaeagnus of the family Elaeagnaceae, the oleaster family) having alternate leaves and small often fragrant flowers with four stamens; especially : russian olive