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wah-wah pedal (plural wah-wah pedals)

  1. (music) A pedal for an electric guitar that mimics the sound of the human voice.
    • 1974, Betty Davis (lyrics and music), “Git In There”, in They Say I'm Different, performed by Betty Davis:
      Go on Ted, go on, beat those drum! / Get in there! / Ah shit, let's give Cordell some, on that wah-wah pedal now!

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