vinyls with blank (=white) labels. a word commonly used in the drum&bass scene. famous dj's or dj's with connections in this genre receive unreleased vinyls that no one else has(sort of), and gets permission to play them in clubs/partys around the world... while other smaller name dj's get stuck playing the same tracks that have been rinsed for 4 months before release.... the word originated from the oldskool dancehalls in jamaica...
did you hear that nu whitelabel d.kay rinsed out last nite?
A word thats been used within the music industry for a looooong time.
A promo or "promotional" record, A record of dubious origin, A record that has uncleared samples, a record that the artist can't sell legally, or a record that has been bootlegged and released way earlier than it legally should have been. Called such because by definition they have a "whitelabel" often marked only by sharpie.