/ ˈdɪskəʊ; NAmE ˈdɪskoʊ/ ( pl. -os ) noun
1.
(also old-fashioned disco·theque ) a club, a party, etc. where people dance to recorded pop music :
disco music / dancing
the youth club disco
2.
the lights and sound equipment for such an event
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WORD ORIGIN
1960s (originally US): abbreviation.