- any small mothlike insect of the order Trichoptera, having two pairs of hairy wings and aquatic larvae (caddis worms)
C17: of unknown origin
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Examples from the Web for 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