caseworm

[ keys-wurm ]

noun

1. a caddisworm or other insect larva that constructs a case around its body.

caseworm

/ ˈkeɪsˌwɜːm /

noun

1. See caddis worm
   another name for a caddis worm

Word History and Origins

Origin of caseworm¹

First recorded in 1600–10; case ² + worm