rehearsal (n.)youdaoicibaDictYouDict[rehearsal 词源字典]
late 14c., "restatement, repetition of the words of another," from rehearse + -al (2), or from Old French rehearsal "a repeating." Sense in theater and music, "act of rehearsing," is from 1570s. Pre-wedding rehearsal dinner attested by 1953.[rehearsal etymology, rehearsal origin, 英语词源]