from The American Heritage Dictionary of the English Language, 4th Edition
A flat surface or part.
from The American Heritage Dictionary of the English Language, 4th Edition
A flatcar.
from The American Heritage Dictionary of the English Language, 4th Edition
A horse that competes in a flat race. Also called runner.
from The American Heritage Dictionary of the English Language, 4th Edition
A large flat piece of mail.
from The American Heritage Dictionary of the English Language, 4th Edition
adverb
Business Without interest charge.
from The American Heritage Dictionary of the English Language, 4th Edition
Directly; completely: went flat against the rules; flat broke.
from The American Heritage Dictionary of the English Language, 4th Edition
Exactly; precisely: arrived in six minutes flat.
from The American Heritage Dictionary of the English Language, 4th Edition
Level with the ground; horizontally.
from The American Heritage Dictionary of the English Language, 4th Edition
Music Below the intended pitch.
from The American Heritage Dictionary of the English Language, 4th Edition
adjective
Commercially inactive; sluggish: flat sales for the month.
from The American Heritage Dictionary of the English Language, 4th Edition
Deflated. Used of a tire.
from The American Heritage Dictionary of the English Language, 4th Edition
Designating the vowel a as pronounced in bad or cat.
from The American Heritage Dictionary of the English Language, 4th Edition
Electrically discharged. Used of a storage battery.
from The American Heritage Dictionary of the English Language, 4th Edition
Fixed; unvarying: a flat rate.
from The American Heritage Dictionary of the English Language, 4th Edition
verb-transitive
Music To lower (a note) a semitone.
from The American Heritage Dictionary of the English Language, 4th Edition
To make flat; flatten.
from The American Heritage Dictionary of the English Language, 4th Edition
verb-intransitive
Music To sing or play below the proper pitch.
from The American Heritage Dictionary of the English Language, 4th Edition
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