any of a family (Agaonidae) of small wasps living in certain figs, esp. a wasp (Blastophaga psenes) active in the pollination of certain cultivated strains
See fig wasp in American Heritage Dictionary 4
noun
A small wasp belonging to the family Agonidae, especially Blastophaga psenes, that breeds in the caprifig and is active in the pollination of fig trees and shrubs.