Dictionary.net

• The aquatic larva of a large American winged insect (Corydalus cornutus), much used a fish bait by anglers; the dobson. It belongs to the Neuroptera.

2010 - New Age Dictionary Database
By Oddity Software

• The aquatic larva of a large American winged insect (Corydalus cornutus), much used a fish bait by anglers; the dobson. It belongs to the Neuroptera.

1913 - Webster's Revised Unabridged Dictionary
By Noah Webster.