The Collaborative International Dictionary of English v.0.48:

Oleaceae \Oleaceae\ prop. n.
   A natural family of trees and shrubs having berries or drupes
   or capsules as fruits; the olive family; sometimes placed
   in the order Oleales; it includes the olive; ash; jasmine;
   privet; and lilac.

   Syn: family Oleaceae, olive family.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Oleaceae
    n 1: trees and shrubs having berries or drupes or capsules as
         fruits; sometimes placed in the order Oleales: olive; ash;
         jasmine; privet; lilac [syn: Oleaceae, family Oleaceae,
         olive family]