Definition of caddis fly
:any of an order (Trichoptera) of insects with four membranous usually hairy wings,vestigial mouthparts, slender many-jointed antennae, and aquatic larvae — compare caddisworm
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caddis fly
noun
From the M-W Editors
First Known Use of caddis fly
1735
CADDIS FLY Defined for Kids
caddis fly
noun
cad·dis fly
\
ˈka-dəs-
\
Definition of caddis fly for Students
:an insect that has four wings and a larva which lives in water in a silk case covered especially with bits of wood, gravel, sand, or plant matter
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