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.
(in the plural) A type of ladies' shoes with very low heels.
(in the plural) A type of flat-soled running shoe without spikes.
A thin, broad brush used in oil and watercolor/watercolour painting.
The flat part of something:
A wide, shallow container or pallet.
(mail) A large mail piece measuring at least 8 1/2 by 11 inches, such as catalogs, magazines, and unfolded paper enclosed in large envelopes.
A railroad car without a roof, and whose body is a platform without sides; a platform car or flatcar.
A flat-bottomed boat, without keel, and of small draught.
A subset of n-dimensional space that is congruent to a Euclidean space of lower dimension.
A straw hat, broad-brimmed and low-crowned.
A flat sheet for use on a bed.
A platform on a wheel, upon which emblematic designs etc. are carried in processions.
A horizontal vein or ore deposit auxiliary to a main vein; also, any horizontal portion of a vein not elsewhere horizontal.
A dull fellow; a simpleton.
(technical, theatre) A rectangular wooden structure covered with masonite, lauan, or muslin that depicts a building or other part of a scene, also called backcloth and backdrop.
Any of various hesperiid butterflies that spread their wings open when they land.
An early kind of toy soldier having a flat design.
An apartment, usually on one level and usually consisting of more than one room.
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.
To depress in tone, as a musical note; especially, to lower in pitch by half a tone.
To make flat; to flatten; to level.
To render dull, insipid, or spiritless; to depress.
To beat or strike; pound
To dash or throw
To dash, rush
Having no variations in height.
(voice) Without variations in pitch.
Having small or invisible breasts and/or buttocks.
(note) Lowered by one semitone.
Of a note or voice, lower in pitch than it should be.
(of a tire or other inflated object) Deflated, especially because of a puncture.
Uninteresting.
(of a carbonated drink) With all or most of its carbon dioxide having come out of solution so that the drink no longer fizzes or contains any bubbles.
Lacking acidity without being sweet.
(of a battery) Unable to emit power; dead.
(of a throw) Without spin; spinless.
Lacking liveliness or action; depressed; dull and boring.
Absolute; downright; peremptory.
(of a consonant) sonant; vocal, as distinguished from a sharp (non-sonant) consonant
(grammar) Not having an inflectional ending or sign, such as a noun used as an adjective, or an adjective as an adverb, without the addition of a formative suffix; or an infinitive without the sign "to".
(of a golf club) Having a head at a very obtuse angle to the shaft.
(of certain fruits) Flattening at the ends.
(authorship, especially of a character) Lacking in depth, substance, or believability; underdeveloped; one-dimensional.
Fixed; unvarying.
So as to be flat.
Bluntly.
(with units of time, distance, etc) Not exceeding.
Completely.
Directly; flatly.
Without allowance for accrued interest.