'hellgrammite' definitions:

Definition of 'hellgrammite'

From: GCIDE

Corydalus \Corydalus\ prop. n. The type genus of the Corydalidae. It includes the dobsonfly (Corydalus cornutus), whose aquatic larva, the hellgrammite, is used as bait in fishing.
Syn: genus Corydalus, genus Corydalis. [WordNet 1.5 +PJC]