noun

 

a set of rooms to live in, with all the rooms on one level of a building

a large block of flats

 

adjective

 

smooth smooth and level, with no curved, high, or hollow parts

a flat surface

 

without emotion without any energy, interest, or emotion

Her voice sounded very flat.

 

without air If a tyre is flat, it does not contain enough air.

 

without gas If a drink is flat, it does not contain enough bubbles of gas.

 

without power If a battery (= object which provides electricity) is flat, it does not contain any more electrical power.

 

too low A flat musical note sounds unpleasant because it is slightly lower than it should be.

 

low Flat shoes do not raise your feet far from the ground.

 

adverb

 

in a horizontal or level position on a surface

She spread the cloth flat across the kitchen table.