definition of
floor

[1] #1 floor n. [flooring] the inside lower horizontal surface (as of a room, hallway, tent, or other structure); "they needed rugs to cover the bare floors"; "we spread our sleeping bags on the dry floor of the tent". wn

[2] #2 floor n. [level, storey, story] a structure consisting of a room or set of rooms at a single position along a vertical scale; "what level is the office on?". wn

[3] #3 floor n. [base] a lower limit; "the government established a wage floor". wn

[4] #4 floor n. the ground on which people and animals move about; "the fire spared the forest floor". wn

[5] #5 floor n. the bottom surface of any lake or other body of water. wn