'Chalcid fly' definitions:

Definition of 'chalcid fly'

From: WordNet
noun
Any of various tiny insects whose larvae are parasites on eggs and larvae of other insects; many are beneficial in destroying injurious insects [syn: chalcid fly, chalcidfly, chalcid, chalcid wasp]

Definition of 'Chalcid fly'

From: GCIDE
  • Chalcid fly \Chal"cid fly`\ [From Gr. chalko`s copper; in allusion to its metallic colors.] (Zool.) One of a numerous family of hymenopterous insects (Chalcidid[ae]. Many are gallflies, others are parasitic on insects. [1913 Webster]