caddis
/ˈkædɪs/(亦作caddis fly)
noun
1- a small moth-like insect with an aquatic larva that typically builds a protective portable case of sticks, stones, and other particles. Some kinds have been traditionally used as bait by fishermen.毛翅目幼虫。
1.1
- Order Trichoptera: several families.毛翅目：数科。
词源
mid 17th cent.: of unknown origin.