Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary


noun \ˈflȯr\

Simple Definition of floor

  • : the part of a room on which you stand

  • : the lower inside surface of something (such as a vehicle)

  • : the area of ground at the bottom of something

Full Definition of floor

  1. 1 :  the level base of a room

  2. 2 a :  the lower inside surface of a hollow structure (as a cave or bodily part) b :  a ground surface <the ocean floor>

  3. 3 a :  a structure dividing a building into stories; also :  story b :  the occupants of such a floor

  4. 4 :  the surface of a structure on which one travels <the floor of a bridge>

  5. 5 a :  a main level space (as in a stock exchange or legislative chamber) distinguished from a platform or gallery b :  the specially prepared or marked area on which indoor sports events take place c :  the members of an assembly <took questions from the floor> d :  the right to address an assembly <the senator from Utah has the floor>

  6. 6 :  a lower limit :  base

floored adjective
from the floor
  1. :  in field goals as opposed to free throws <made 16 of 18 shots from the floor>

Examples of floor

  1. Keep your feet on the floor.

  2. the floor of a car

  3. She lives on the second floor of a five-story building.

  4. His office is located on the fourth floor.

Origin of floor

Middle English flor, from Old English flōr; akin to Old High German fluor meadow, Latin planus level, and perhaps to Greek planasthai to wander

First Known Use: before 12th century

Other Architecture Terms




Simple Definition of floor

  • : to cover (a surface) with material to make a floor

  • : to knock (someone) to the floor or ground

  • : to surprise, shock or amaze (someone) very much

Full Definition of floor

  1. transitive verb
  2. 1 :  to cover with a floor or flooring

  3. 2 a :  to knock or bring down b :  flabbergast, dumbfound

  4. 3 :  to press (the accelerator of a vehicle) to the floorboard; also :  to accelerate rapidly <floored the van>

floor·er noun

Medical Dictionary


noun \ˈflō(ə)r, ˈflȯ(ə)r\

Medical Definition of floor

  1. :  the lower inside surface of a hollow anatomical structure <the floor of the pelvis>

Seen and Heard

What made you want to look up floor? Please tell us where you read or heard it (including the quote, if possible).


February 7, 2016

a slight offense

Get Word of the Day daily email!


Take a 3-minute break and test your skills!


Which of the following refers to thin, bending ice, or to the act of running over such ice?

duvet pince-nez spindrift kittly-benders
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.


Test Your Knowledge - and learn some interesting things along the way.