flat

An area of level ground.

A note played a semitone lower than a natural, denoted by the symbol ♭ placed after the letter representing the note (e.g., B♭) or in front of the note symbol (e.g. ♭♪).

A flat tyre/tire.

To make a flat call; to call without raising.

To become flat or flattened; to sink or fall to an even surface.

To fall from the pitch.

Having no variations in height.

"The land around here is flat."

(voice) Without variations in pitch.

Having small or invisible breasts and/or buttocks.

"That girl is completely flat on both sides."

So as to be flat.

"Spread the tablecloth flat over the table."

Bluntly.

"I asked him if he wanted to marry me and he turned me down flat."

(with units of time, distance, etc) Not exceeding.

"He can run a mile in four minutes flat."