noun
or hell·gra·mite or hel·gra·mite or hel·gram·mite ˈhelgrəˌmīt, usu -īd.+V
( -s )
Etymology: origin unknown
: a long-lived carnivorous aquatic larva of a large North American insect ( Corydalus cornutus ) or of various related insects that is much used as a fish bait by anglers — called also dobson, toe-biter