oleaster
/ˌəʊlɪˈæstə(r)/noun
1- a Eurasian shrub or small tree which is sometimes cultivated as an ornamental沙枣树。
1.1
- Genus Elaeagnus, family Elaeagnaceae: several species, in particular E. angustifolia, which bears edible yellow olive-shaped fruit (also called
R USSIAN OLIVE in North America).胡颓子属, 胡颓子科：数种, 尤指沙枣（拉丁名E. angustifolia）, 结黄色橄榄状可食果实（在北美亦称R USSIAN OLIVE）。
词源
late Middle English: from Latin, from olea 'olive tree'.