Source : Webster's Revised Unabridged Dictionary (1913)

Caddice \Cad"dice\, Caddis \Cad"dis\, n. [Prov. E. caddy, cadew;
   cf. G. k["o]der bait.] (Zo["o]l.)
   The larva of a caddice fly. These larv[ae] generally live in
   cylindrical cases, open at each end, and covered externally
   with pieces of broken shells, gravel, bits of wood, etc. They
   are a favorite bait with anglers. Called also {caddice worm},
   or {caddis worm}.

   {Caddice fly} (Zo["o]l.), a species of trichopterous insect,
      whose larva is the caddice.