1. flat bone part of the sirloin next to the wedge bone
  2. flatiron an iron that was heated by placing it on a stove
  3. flatboat a flatbottom boat for carrying heavy loads
  4. floatplane a seaplane equipped with pontoons for landing or taking off from water
  5. flat bench a bench on which a weightlifter lies to do exercises
  6. flatten make flat or flatter
  7. fleabane hairy perennial Eurasian herb with yellow daisylike flowers reputed to destroy or drive away fleas
  8. flatbed freight car without permanent sides or roof
  9. flattop a closely cropped haircut; usually for men
  10. floatation the phenomenon of floating
  11. flatulence a state of excessive gas in the alimentary canal
  12. flotation the phenomenon of remaining on the surface of a liquid
  13. field bean Old World upright plant grown especially for its large flat edible seeds but also as fodder
  14. flap down throw violently
  15. flat pea European perennial with mottled flowers of purple and pink
  16. flatulent generating excessive gas in the alimentary canal
  17. fault line (geology) line determined by the intersection of a geological fault and the earth's surface
  18. volatile liable to lead to sudden change or violence
  19. wild bean a North American vine with fragrant blossoms and edible tubers; important food crop of Native Americans
  20. flat knot a square knot used in a reef line