■ noun ( plural dobsonflies ) a large North American winged insect related to the alderflies, whose aquatic larva (the hellgrammite) is used as fishing bait. [ Corydalis cornutus and other species.]
Origin
early 20th cent.: of unknown origin.
DOBSONFLY
Meaning of DOBSONFLY in English
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004