Longman Dictionary of Contemporary English
The Collaborative International Dictionary
disc jockey \disc" jock`ey\ (d[i^]sk" j[o^]k`[y^]), n. a person who plays records or compact disks of recorded music; especially, a person who selects and plays recorded music for broadcast over the radio, often making comments about the music or other topics and also announcing commercial advertising messages; also, one who plays recorded music at a dance or social gathering, especially as a profession. [Also spelled disk jockey.]
Syn: DJ. [PJC]
n. A person who plays and mixes recorded music at nightclubs, over the radio, and/or as a backup musician for spoken word, or hip hop performers.
A disc jockey (abbreviated DJ, D.J. or deejay) is a person who mixes recorded music as it is playing. Originally, the "disc" in "disc jockey" referred to gramophone records, but now "DJ" is used as an all-encompassing term to describe someone who mixes recorded music from any sources, including cassettes, CDs, or digital audio files on a CDJ or laptop. DJs typically perform for a live or broadcast audience, but DJs also create mixes that are recorded for later sale and distribution.
DJs use equipment that can play at least two sources of recorded music simultaneously and mix them together. This allows the DJ to create seamless transitions between recordings and develop unique mixes of songs. Often, this involves aligning the beats of the music sources so their rhythms do not clash when they are played together. DJ equipment also allows the DJ to preview a source of recorded music in headphones before playing it for the audience. Previewing the music in headphones helps the DJ pick the next track they want to play and cue up the track to the desired starting location so it will mix well with the currently playing music.
Usage examples of "disc jockey".
Then, in the lull that followed, out of the gloom, Marigold's very distinct tones could be heard saying to the man on her other side, 'Are you the chief buyer of Tower Records or a disc jockey for Radio 1?
Competing with them from somewhere in the back was the radio voice of a disc jockey identifying himself as 'your pal Bobby Russell' promising the new album by Prince to the caller who could give the name of the actor who had played Wally on Leave It to Beaver.
Gill had taken up with a disc jockey on a local radio station, a man whose enthusing voice Rebus seemed to hear whenever he entered a shop or a filling station, or passed the open window of a tenement block.
Kevin, the club's disc jockey, was pleased with the hard guitar and fast bass beat.
I switched on my cell phone again and keyed in the number for the unlisted back line that went directly to the broadcasting booth at KBAY, the biggest radio station in Santa Rosita County, where Sasha Good all was currently the disc jockey on the midnight-to-six air shift.
Ten minutes later a Spanish-speaking disc jockey signed off in a blur of static and a few seconds after that another voice traveled across the long night.
One night I tried to arrange a contact with a young Angel named Rodger, a one-time disc jockey.