or cad·dice·fly

[ kad-is-flahy ]

noun,plural cad·dis·flies.
  1. any of numerous aquatic insects constituting the order Trichoptera, having two pairs of membranous, often hairy wings and superficially resembling moths.

Origin of caddisfly

First recorded in 1780–90; see origin at caddisworm, fly1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use caddisfly in a sentence

British Dictionary definitions for caddis fly

caddis fly

  1. any small mothlike insect of the order Trichoptera, having two pairs of hairy wings and aquatic larvae (caddis worms)

Origin of caddis fly

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