Other forms: nickelodeons
A nickelodeon is an old fashioned coin-operated machine that plays music. You can also call a nickelodeon a "jukebox."
In the US, it's common to refer to an old-timey jukebox or player piano (or any music machine that operates with a coin or token) as a nickelodeon, although the original meaning was a movie theater or cinema that cost five cents. The movie theater definition dates from the late 1800s, from the Greek oideion, "building for performances," and the jukebox meaning was first used in the 1930s.