Lacewing \Lace"wing`\ (l[=a]s"w[i^]ng`), n. (Zool.)
Any one of several species of neuropterous insects of the
genus {Chrysopa} and allied genera. They have delicate,
lacelike wings and brilliant eyes. Their larv[ae] are useful
in destroying aphids. Called also {lace-winged fly}, and
{goldeneyed fly}.
[1913 Webster]