disco

Etymology 1

From a shortening of discotheque, from French discothèque.

noun

1. (countable, slightly dated) Clipping of discotheque, a nightclub for dancing.
   Burn down the disco / Hang the blessed DJ / Because the music that they constantly play / It says nothing to me about my life 1986, Morrissey & Johnny Marr (lyrics and music), “Panic”, in The World Won’t Listen, performed by The Smiths
2. (uncountable, music) A genre of dance music that was popular in the 1970s, characterized by elements of soul music with a strong Latin-American beat and often accompanied by pulsating lights.
   And black music became a hot commodity in the form of disco, its lyrics and rhythm laced with a palpable (even ethnic) amiguity, helping people dance and escape their concerns. Even the cry of “burn, baby, burn”, a popular chant during many a 1960s urban rebellion, was co-opted by the times, becoming the chorus for the 1977 dance hit “Disco Inferno.” 2009, Marcus Reeves, Somebody Scream!, Farrar, Straus and Giroux

verb

1. (intransitive) To dance disco-style dances.
   The cause of his ill health is left a little obscure, and no wonder, because shortly before his dreadful deathbed scene he's well enough to join the women in a wild night of disco dancing. You have not lived until you've seen Martin Landau discoing. 2013, Roger Ebert, “B.A.P.S.”, in I Hated, Hated, Hated This Movie, Andrews McMeel Publishing
2. (intransitive) To go to discotheques.
   Learning that a discoing sex appeal has returned to the runways is a little like hearing that Barbra Streisand and Barry Gibb are reuniting. February 16, 2009, Cathy Horyn, “Designers Square Off: Sexy vs. Classy”, in New York Times

Etymology 2

Clipping of discovery

noun

1. (US, law, informal) discovery (pre-trial phase in which evidence is gathered)
   You don't need to worry about these details at the complaint stage, we can get them in disco.
2. (US, law, informal) discovery (materials revealed to the opposing party during the pre-trial phase in which evidence is gathered)
   Has the disco come in from the defendants yet? We sent them requests almost six weeks ago.