lacewing Meaning, Definition & Usage

  1. noun any of two families of insects with gauzy wings (Chrysopidae and Hemerobiidae); larvae feed on insect pests such as aphids
    lacewing fly.

WordNet

Lace"wing` noun
Definitions
  1. (Zoöl.) Any one of several species of neuropterous insects of the genus Chrysopa and allied genera. They have delicate, lacelike wings and brilliant eyes. Their larvæ are useful in destroying aphids. Called also lace-winged fly, and goldeneyed fly.

Webster 1913