caddisworm

caddisworm

[kad-is-wurm]
noun
the aquatic larva of a caddisfly, having an armored head and a pair of abdominal hooks, and typically living in a case built from sand or plant debris.
Also called caddis, caddice, strawworm.


Origin:
1615–25; caddis (perhaps plural, taken as singular, of caddy, diminutive of cad larva, ghost) + worm

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WordNet
caddisworm

noun
larva of the caddis fly; constructs a case of silk covered with sand or plant debris 
WordNet® 3.0, © 2006 by Princeton University.
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