I. -ˌhed noun
( plural Flatheads or Flathead )
Date: 1709
1. : a member of any of several North American Indian peoples that practiced head-flattening
2. : an American Indian people of Montana
3. not capitalized : any of a family (Platycephalidae) of mostly Australian and East Indian marine food fishes that resemble sculpins
II. ˈflat-ˌhed geographical name
river 245 miles (394 kilometers ) SE British Columbia & NW Montana flowing S through Flathead Lake (reservoir in Montana) into Clark Fork