d.j. d.j. /ˌdiː ˈdʒeɪ/

noun

1. [Informal] A person who announces and plays popular recorded music  ( d.j. [Informal] , disc jockey , disk jockey [ N. American] , DJ , deejay [Informal] , selecta [Informal, British] )
   a person who announces and plays popular recorded music
    The DJ played some great tracks at the party last night
   The DJ played some great tracks at the party last night