noun, plural (especially collectively) flat·head, (especially referring to two or more kinds or species) flat·heads.
- any of several scorpaenoid fishes of the family Platycephalidae, chiefly inhabiting waters of the Indo-Pacific region and used for food.
- a member of a tribe of Salishan Indians of northwest Montana.
- a Chinook Indian.
- a river in SE British Columbia and NW Montana, flowing S to Flathead Lake and S and W to the Clark Fork River. 240 miles (385 km) long.
noun plural -head or -heads
- any Pacific scorpaenoid food fish of the family Platycephalidae, which resemble gurnards