flat head

US: (flat′hed′)

WordReference Random House Unabridged Dictionary of American English © 2026

flat′ head′, 

1. Building a flat screw head. See illus. under screw. 

flat•head  (flat′hed′), n., pl. (esp. collectively) -head,  (esp. referring to two or more kinds or species) -heads. 

1. Fish any of several scorpaenoid fishes of the family Platycephalidae, chiefly inhabiting waters of the Indo-Pacific region and used for food.

• flat¹ + head 1825–35

Flat•head  (flat′hed′), n. 

1. Language Varieties a member of a tribe of Salishan Indians of northwest Montana.
2. Language Varieties a Chinook Indian.

• so called from their supposed practice of flattening their children's heads 1530–40