wah-wah

American  

[wah-wah] / ˈwɑˌwɑ /

Or wa-wa

adjective

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.

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noun

1. a sound or effect like the muted sound of a trumpet, especially in music.

2. an electronic device or attachment to produce such a sound, often used with an electric guitar.

wah-wah British  

/ ˈwɑːˌwɑː /

noun

1. the sound made by a trumpet, cornet, etc, when the bell is alternately covered and uncovered: much used in jazz

2. an electronic attachment for an electric guitar, etc, that simulates this effect

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Etymology

Origin of wah-wah

First recorded in 1925–30; imitative