scat2Pronunciation: /skat/Definition of scat noun (also scat singing) [mass noun] improvised jazz singing in which the voice is used in imitation of an instrument: [as modifier]:a scat rendition scat samples verb (scats, scatting, scatted) [no object] sing using the voice in imitation of an instrument: she scats and harmonizes simultaneously (as noun scatting)some gentle scattingOrigin: 1920s: probably imitativescat in other Oxford dictionaries Definition of scat in the US English dictionary