definition of
flat

[1] #1 flat s. [level, plane] 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". wn

[2] #2 flat s. having a relatively broad surface in relation to depth or thickness; "flat computer monitors". wn

[3] #3 flat n. a level tract of land; "the salt flats of Utah". wn

[4] #4 flat s. [prostrate] stretched out and lying at full length along the ground; "found himself lying flat on the floor". wn

[5] #5 flat n. a shallow box in which seedlings are started. wn