| flathead | (n) food fish of the Indonesian region of the Pacific; resembles gurnards |
| flathead | (n) pallid bottom-dwelling flat-headed fish with large eyes and a duck-like snout |
| flathead catfish | (n) large catfish of central United States having a flattened head and projecting jaw, Syn. spoonbill catfish, Pylodictus olivaris, mudcat, shovelnose catfish, goujon |
| Flathead | a. Characterized by flatness of head, especially that produced by artificial means, as a certain tribe of American Indians. [ 1913 Webster ] |
| Flathead | n. (Ethnol.) A Chinook Indian. See Chinook, n., 1. [ 1913 Webster ] |