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Meaning of wah-wah

wah-wah

Pronunciation: (wä'wä"), [key]
— adj.
  1. producing a muted, bawling sound like that of a trumpet with the hand moved momentarily over the bell: a wah-wah effect on a synthesizer; a guitar with a wah-wah pedal.
—n.
  1. a sound or effect like the muted sound of a trumpet, esp. in music.
  2. an electronic device or attachment to produce such a sound, often used with an electric guitar.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.