1. A member of one of the tribes of American Indians who lived a nomadic life following the buffalo in the Great Plains of North America
   - Plains Indian

Type of: American Indian, Indian, Red Indian

• four-year-old
• fourchette
• Fourdrinier
• fourfold
• fourfold point correlation
• fourhanded
• Fourier
• Fourier analysis
• Fourier series
• fourpence
• fourpenny
• fourpenny nail
• fourscore
• foursome
• foursquare
• fourteen
• fourteenth
• Fourteenth Amendment
• fourth
• Fourth Council of Constantinople
• fourth cranial nerve
• Fourth Crusade
• fourth deck
• fourth dimension
• Fourth Earl of Chesterfield