hellgrammite

noun
hell·​gram·​mite | \ˈhel-grə-ˌmīt \

Definition of hellgrammite 

: a carnivorous aquatic North American insect larva that is the young form of a dobsonfly (especially Corydalis cornutus) and is used for fish bait

First Known Use of hellgrammite

1866, in the meaning defined above

History and Etymology for hellgrammite

origin unknown

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The first known use of hellgrammite was in 1866

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