Noun dobson has 2 senses

• dobson(n = noun.animal) hellgrammiate - large brown aquatic larva of the dobsonfly; used as fishing bait; Array
is a member of corydalis, corydalus, genus corydalis, genus corydalus
is a kind of larva

• dobson(n = noun.animal) corydalus cornutus, dobson fly, dobsonfly - large soft-bodied insect having long slender mandibles in the male; aquatic larvae often used as bait; Array
is a kind of neuropteran, neuropteron, neuropterous insect
is a member of corydalis, corydalus, genus corydalis, genus corydalus