dis·co 
(dĭskō)
(dĭskō)n. pl. dis·cos
1. A discotheque.
2.
a. Popular dance music, popularized in the late 1970s, characterized by strong repetitive bass rhythms.
b. A style of dancing usually done to disco music.
intr.v. dis·coed, dis·co·ing, dis·cos
To dance to disco music.
[Short for DISCOTHEQUE.]
disco adj.