ˈ ̷ ̷ˌ ̷ ̷ noun
( plural flatheads or flathead )
1. usually capitalized
a. : any of several Indian peoples (as the Chinook, Catawba, Choctaw, and Waxhaw) of No. America that formerly practiced head-flattening
b. : a member of any of such peoples
2. usually capitalized
a. : a Salish people that formerly occupied most of western Montana
b. : a member of such people
3.
a. : hognose snake
b. : any of various fishes with more or less flat heads: as
(1) : any of a family (Platycephalidae) of chiefly Indo-pacific marine food fishes that resemble sculpins
(2) : barramunda a
(3) : a large minnow ( Platygobio gracilis ) of rivers of the Rocky mountain area
(4) : flathead catfish
4.
a. : a flattened head of a rivet or bolt ; also : a rivet or bolt with such a head
b. : a screw with a head flat on top and tapering to the shaft so that it can be countersunk
5. : a stupid or gullible person : simpleton
6. South : faller 1