floor · noun C /flɔːr/
floor (SURFACE)
A1 usually no plural a surface that you walk on inside a building
Dictionary examples:
a wood/tile floor
The bathroom floor needs cleaning.
The children sat playing on the floor.
Learner example:
Lily gave me a small toy cat. It can walk on the floor. (Key English Test; A2; Chinese)
floor (BUILDING)
A2 a particular level of a building
Dictionary examples:
This building has five floors.
Take the elevator to the 51st floor.
We live on the third floor.
a ground floor/first-floor apartment
Learner example:
The new art class is on Tuesday on the first floor with Mrs. Keller. (Key English Test; A2; French)
floor (AREA)
B1 an area where a particular activity happens
Dictionary example:
a dance floor
Learner example:
It has got a very big dance floor with a skil[l]ful jazz band. (Preliminary English Test; B1; Farsi)