/euh chah'keuh toor"euh/ ; It. /aht chahk'kah tooh"rddah/ , n. , pl. acciaccaturas, acciaccature /-toor"ay, -toor"ee/ ; It. /-tooh"rdde/ . Music.
a short grace note one half step below, and struck at the same time as, a principal note.
[ 1875-80; acciacc ( are ) to crush, bruise (based on an echoic root ciacc- ) + -atura (see -ATE 1 , -URE) ]