Englishfor English speakers
floor
Noun
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The floor is the flat part at the bottom of a room. People stand on the floor.
Don't drop your milk on the floor.
The children are sitting on the floor to play.
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A floor is a level of a building.
To get to room 302 you have to go up three floors.
slab
Noun
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A slab is a large and flat piece of a solid material.
panel
Noun
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A panel is a flat piece of wood or other material, used as part of a wall or on the side of something.
The house has aluminium panels covering the outside.
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A panel is a group of people who come together at a table to talk or to judge, usually in front of many other people.
The panel made a decision that Paul had won the dance contest.
I went to listen to a panel talking about global warming.
panel
Verb
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To put panels on something.