noun, plural (especially collectively) flathead (especially referring to two or more kinds or species) flatheads.
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 (pl) -head, -heads
any Pacific scorpaenoid food fish of the family Platycephalidae, which resemble gurnards
noun 1. a flat screw head.
noun 1. a yellow and brown catfish, Pylodictus olivaris, common in the central U.S., having a flattened head and a projecting lower jaw.
adjective Stupid: The speaker was a flatheaded idiot (1880+)
[flat-hed-id] /ˈflætˌhɛd ɪd/ noun 1. (def 1).