flat-head noun. ['flathɛd] Also flathead. E18.
[from FLAT adjective + HEAD noun.]
1. (A member of) any of various peoples, esp. (Flathead) certain N. American Indian peoples such as Chinook, Choctaw, and Salish, who customarily practised head-flattening or (in the case of the Salish) were erroneously credited with so doing. E18.

2. A fish with a flattened head; spec. any of numerous marine fishes of the family Platycephalidae. L18.

3. A fool, a simpleton. dial. & slang. M19.

4. A hognose snake. US. L19.

Comb.:
flathead catfish a large N. American catfish, Pylodictis olivaris, with long slender body and flattened head.

[TahlilGaran] English Dictionary ▲