Noun | 1.strawworm - larva of the caddis fly; constructs a case of silk covered with sand or plant debriscaddiswormorder Trichoptera, Trichoptera - an order of insects consisting of caddis fliescaseworm - insect larva that constructs a protective case around its body | | 2.strawworm - larva of chalcid flies injurious to the straw of wheat and other grainsjointwormChalcidae, Chalcididae, family Chalcidae, family Chalcididae - an arthropod family including: chalcidflieslarva - the immature free-living form of most invertebrates and amphibians and fish which at hatching from the egg is fundamentally unlike its parent and must metamorphose |