Definition of flat:
a level tract of land; "the salt flats of Utah"
a shallow box in which seedlings are started
a musical notation indicating one half step lower than the note named
freight car without permanent sides or roof
a deflated pneumatic tire
scenery consisting of a wooden frame covered with painted canvas; part of a stage setting
a suite of rooms usually on one floor of an apartment house
having a surface without slope, tilt in which no part is higher or lower than another; "a flat desk"; "acres of level farmland"; "a plane surface"; "skirts sewn with fine flat seams"
having a relatively broad surface in relation to depth or thickness; "flat computer monitors"
not modified or restricted by reservations; "a categorical denial"; "a flat refusal"
stretched out and lying at full length along the ground; "found himself lying flat on the floor"
lacking contrast or shading between tones
(of a musical note) lowered in pitch by one chromatic semitone; "B flat"
flattened laterally along the whole length (e.g., certain leafstalks or flatfishes)
lacking taste or flavor or tang; "a bland diet"; "insipid hospital food"; "flavorless supermarket tomatoes"; "vapid beer"; "vapid tea"
lacking stimulating characteristics; uninteresting; "a bland little drama"; "a flat joke"
having lost effervescence; "flat beer"; "a flat cola"
sounded or spoken in a tone unvarying in pitch; "the owl's faint monotonous hooting"
horizontally level; "a flat roof"
lacking the expected range or depth; not designed to give an illusion or depth; "a film with two-dimensional characters"; "a flat two-dimensional painting"
not reflecting light; not glossy; "flat wall paint"; "a photograph with a matte finish"
commercially inactive; "flat sales for the month"; "prices remained flat"; "a flat market"
with flat sails; "sail flat against the wind"
in a forthright manner; candidly or frankly; "he didn't answer directly"; "told me straight out"; "came out flat for less work and more pay"