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Sense: 1
Date: 1800-1900
Language: Scottish English
Origin: flet 'inside of a house' (14-19 centuries) (influenced by FLAT1)
Sense: 2-7
Date: 1200-1300
Origin: FLAT1


2 noun
Related topics: Music, Motor Vehicles
flat2 S2 W3 [countable]

place to live

especially British English a place for people to live that consists of a set of rooms that are part of a larger building [= apartment]:
They have a flat in Crouch End.
a two-bedroom flat
The building was knocked down to make way for a block of flats (=a large building with many flats in it).
granny flat


TTC especially American English a tyre that does not have enough air inside [= flat tyre]:
Damn, the car has a flat.
He stopped to change a flat.


a) APM a musical note that is one semitone lower than a particular note
b) APM the sign in written music that shows that a note is one semitone lower than a particular note [↪ sharp, natural]



[plural]DN an area of land that is at a low level, especially near water:
mud flats



[plural] American English a pair of women's shoes with very low heels

the flat of somebody's hand/a knife/a sword etc

the flat part or flat side of something

on the flat

British English on ground that is level and does not slope

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