(ä-chä'kə-tʊr'ə) n.Music An ornament note that is one half step or one whole step below a principal note and is sounded at the same time as the principal note, adding dissonance to a harmony.
A ‘crushed note’: an ornament consisting of an accessory note adjacent to (usually a semitone below) the main note, sounded with it and at once released.
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