The Collaborative International Dictionary
saber fish
cutlass fish \cutlass fish\, cutlassfish \cutlassfish\n. 1. (Zo["o]l.) a peculiar, long, thin, marine fish ( Trichiurus lepturus) of the southern United States and West Indies, having a long whiplike scaleless body and sharp daggerlike teeth; -- called also frostfish, saber fish, silver eel, and, improperly, swordfish; also, several related members of the genus Trichiurus. It is closely related to snake mackerel.
Syn: frost fish, frostfish, hairtail.