2Zoology an insect larva that constructs a protective case around itself; any of various insects, especially moths of the family Bucculatrigidae and caddisflies, having such larvae.
Origin
Late Middle English.
Definition of case-maker in US English:
case-maker
noun
1A person who makes cases.
2Zoology an insect larva that constructs a protective case around itself; any of various insects, especially moths of the family Bucculatrigidae and caddisflies, having such larvae.