- any small mothlike insect of the order Trichoptera, having two pairs of hairy wings and aquatic larvae (caddis worms)
Word Origin for caddis fly
Examples from the Web for caddis fly
Historical Examples of caddis fly
Every fisherman knows the Caddis-worm, which is the larval form of the Caddis-fly.Old Flies in New Dresses
Charles Edward Walker
Every good disciple of Walton and lover of the “gentle art” knows the value of the Caddis-fly, or Water-moth, as bait.
Here is a caddis-fly now, its gauzy wings folded tentwise over its back.The Animal World, A Book of Natural History