interlude (n.)youdaoicibaDictYouDict[interlude 词源字典]
c. 1300, from Medieval Latin interludium "an interlude," from Latin inter- "between" (see inter-) + ludus "a play" (see ludicrous). Originally farcical episodes introduced between acts of long mystery plays; transferred sense of "interval in the course of some action" is from 1751.[interlude etymology, interlude origin, 英语词源]