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caddisfly: Meaning and Definition of

cad•dis•fly

Pronunciation: (kad'is-fl?"), [key]
? pl. -flies.
  1. any of numerous aquatic insects constituting the order Trichoptera, having two pairs of membranous, often hairy wings and superficially resembling moths.
Random House Unabridged Dictionary, Copyright 1997, by Random House, Inc., on Infoplease.