Definitions

1. noun

a larval stage of a trichopterous insect, especially one that lives in a protective case made of plant material and bits of stone.

“The caddis larva spun a protective case to defend itself from predators.”

2. verb

to prepare a case made of plant material and bits of stone for the larva of a caddisfly.

“The angler caddised a rock to create a realistic imitation of a caddisfly case for fishing.”