double flat From WikiWord, the free dictionary English Contents DefinitionsRelated wordsReferences DefinitionsnounAn accidental that indicates that a note should be played a whole step lower Related wordsSynonymse-flatflatted fiftha-flat minora-flatsharp-and-a-halfdouble noted-flat majordouble wholedouble whole notesharpinge-flat minorquadruple whole note32nd notesecondc-flat majorb-flat minor References Wiktionary — double flat Wikipedia — double flat