1) Appoggiatura 2) Crushing but Italian 3) Crushing but in Italian 4) Crushing in Italian 5) Crushing 6) Grace note 7) Italian musical term 8) Musical note 9) Musical term to an Italian 10) Musical term in Rome 11) Note 12) Tone 
very short note played before a longer one
• (n.) 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.
in music, ornamental note sometimes confused with appoggiatura (q.v.).
Ac·ciac`ca·tu'ra noun [ Italian , from acciaccare to crush.] (Mus.) 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 . 
In music, an acciaccatura is a short grace note, one semitone below the note to which it is prefixed, used especially in organ music. It is now used as an equivalent to the short appoggiatura.
a short grace note one half step below, and struck at the same time as, a principal note.