cutlassfish

or cut·lass fish

[ kuht-luh s-fish ]
/ ˈkʌt ləsˌfɪʃ /

noun, plural (especially collectively) cut·lass·fish, (especially referring to two or more kinds or species) cut·lass·fish·es.

any compressed, ribbonlike fish of the genus Trichiurus, having daggerlike teeth.
Also called frostfish.

Origin of cutlassfish

First recorded in 1880–85; cutlass + fish

British Dictionary definitions for cutlass fish

cutlass fish

noun

US another name for hairtail