nickelodeon (n.)youdaoicibaDictYouDict[nickelodeon 词源字典]
1888, "motion picture theater," from nickel "five-cent coin" (the cost to view one) + -odeon, as in Melodeon (1840) "music hall," ultimately from Greek oideion "building for musical performances" (see odeon). Meaning "nickel jukebox" is first attested 1938.[nickelodeon etymology, nickelodeon origin, 英语词源]