wah-wah
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wah-wah
also wa-wa (wä′wä′)n.
1. A wavering sound resembling the vowels of human speech, produced by alternately covering and uncovering the bell of a trumpet or trombone with a mute.
2. A similar sound produced by means of an electronic attachment, as on an electric guitar, operated by a foot pedal.
[Imitative.]
wah′-wah′ adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
wah-wah
(ˈwɑːˌwɑː)n
1. (Instruments) the sound made by a trumpet, cornet, etc, when the bell is alternately covered and uncovered: much used in jazz
2. (Instruments) an electronic attachment for an electric guitar, etc, that simulates this effect
[C20: of imitative origin]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014