noun. An ornament note that is one half step or one whole step higher or lower than a principal note and is sounded at the same time as the principal note, adding dissonance to a harmony.

noun. In music: A grace-note one half step below a principal note, struck at the same time with the principal note and immediately left, while the latter is held.

noun. More frequently, a short appoggiatura. See appoggiatura.

noun. A short grace note, one semitone below the note to which it is prefixed; -- used especially in organ music. Now used as equivalent to the short appoggiatura.

noun. A short grace note (theoretically taking no time at all), occurring on the beat occupied by the main note to which it is prefixed, one scale-step higher or lower than that main note. (Sometimes equivalent, therefore, to a short appoggiatura, but in Baroque music interpreted differently and more strictly.) Written as a note lighter in appearance, typically a quaver (eighth note), with an oblique stroke through the stem.

noun. an embellishing note usually written in smaller size

"My tuppence worth is that I should like dictionaries to reflect both kinds of use IN THIS CASE - it's handy to know how a word is pronounced in the language from which it is borrowed, in a transparent case of highly specific borrowing such as 'acciaccatura'."

musical note  note  tone  

acciaccature