Dictionary definition · flat
noun
- 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
adjective
- having a surface without slope, tilt in which no part is higher or lower than another"a flat desk"
- having a relatively broad surface in relation to depth or thickness"flat computer monitors"
- not modified or restricted by reservations"a categorical denial"
- stretched out and lying at full length along the ground"found himself lying flat on the floor"
- lacking contrast or shading between tones
adverb
- with flat sails"sail flat against the wind"
- in a forthright manner; candidly or frankly"he didn't answer directly"
Source: Open English WordNet (CC BY 4.0).