1. folding door an interior door that opens by folding back in sections
  2. sliding door a door that opens by sliding instead of swinging
  3. folding chair a chair that can be folded flat for storage
  4. floating dock dry dock that can be submerged under a vessel and then raised
  5. floating voter a voter who has no allegiance to any political party and whose unpredictable decisions can swing the outcome of an election one way or the other
  6. revolving door a door consisting of four orthogonal partitions that rotate about a central pivot; a door designed to equalize the air pressure in tall buildings
  7. folding money currency issued by a government or central bank and consisting of printed paper that can circulate as a substitute for specie
  8. loading dock a platform where trucks or trains can be loaded or unloaded
  9. folding saw a saw with a toothed blade that folds into a handle
  10. folding the act of folding
  11. flowering tree any tree having seeds and ovules contained in the ovary
  12. holding yard a pen where livestock is temporarily confined
  13. flight indicator a navigational instrument based on a gyroscope
  14. cooling tower a cooling system used in industry to cool hot water (by partial evaporation) before reusing it as a coolant
  15. floating dry dock dry dock that can be submerged under a vessel and then raised
  16. wild mango tree African tree with edible yellow fruit resembling mangos
  17. fielding average a measure of a fielder's performance
  18. floating-moss free-floating aquatic ferns
  19. flight engineer the flight crewman responsible for mechanical operation while in flight
  20. leading tone (music) the seventh note of the diatonic scale