ornament
musical flourishes that are not necessary to carry the overall line of the melody (or harmony), but serve instead to decorate or "ornament" that line
en-GB/ˈɔːnəmɛnt/
en-US/ˈɑɹnəˌmɛntv/
musical flourishes that are not necessary to carry the overall line of the melody (or harmony), but serve instead to decorate or "ornament" that line