Wordnet 3.0
NOUN (1)
1.
insect whose female has a saw-like ovipositor for inserting eggs into the leaf or stem tissue of a host plant;
The Collaborative International Dictionary of English v.0.48:
Sawfly \Saw"fly`\, n. (Zool.)
Any one of numerous species of hymenopterous insects
belonging to the family Tenthredinidae. The female usually
has an ovipositor containing a pair of sawlike organs with
which she makes incisions in the leaves or stems of plants in
which to lay the eggs. The larvae resemble those of
Lepidoptera.
[1913 Webster]
WordNet (r) 3.0 (2006):
sawfly
n 1: insect whose female has a saw-like ovipositor for inserting
eggs into the leaf or stem tissue of a host plant