Noun flat Music a note played a semitone lower than a natural. It is denoted with a ♭ sign. An apartment. Translations Danish: lejlighed c (2) Polish: bemol m (1), mieszkanie n (2). Adjective flat without changes in altitude Translations Danish: flad Dutch: vlak, plat French: plat German: flach Indonesian: rata, datar Japanese: 平ら (たいら, taira) Polish: płaski m, płaska f, płaskie n Romanian: plat m, plată f Spanish: plano Adverb flat whithout changes in altitude Translations Danish: fladt Polish: płasko