wah

wah-wah

noun

{bc}a fluctuating muted effect produced on a brass instrument by use of a mute {dx_def}see {dxt|mute:2|mute:2|1}{/dx_def} or on an electric guitar by use of a pedal {dx_def}see {dxt|pedal:1|pedal:1|1b}{/dx_def} connected to an amplifier