DJ

Short definition from Wiktionary

Noun

1. 1
   Initialism of disc jockey.
2. 2
   Initialism of dinner jacket.
3. 3
   Initialism of dust jacket.

Verb

1. 1
   To act as a DJ (disc jockey); to play, cut and mix/blend recorded music.

Proper noun

1. 1
   Dow Jones & Company, an American publishing firm.
2. 2
   Initialism of David Jones, an Australian luxury department store.

Symbol

1. 1
   Symbol for decijoule, an SI unit of work or energy equal to 10⁻¹ joules.