This word is not acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. A device consisting of two volume controls which control separate records, allowing the DJ to change the source of the sound between the records.

"Music playback is controlled by a bevy of buttons, the touchpad and what's known as a crossfader, which allows you to blend the music that's playing on each of the two audio channels."

fader