From WordNet (r) 3.0 (2006) :
gar
n 1: primitive predaceous North American fish covered with hard
scales and having long jaws with needlelike teeth [syn:
gar, garfish, garpike, billfish, Lepisosteus
osseus]
2: elongate European surface-dwelling predacious fishes with
long toothed jaws; abundant in coastal waters [syn:
needlefish, gar, billfish]