wah-wah
noun /ˈwɑː wɑː/
/ˈwɑː wɑː/
[uncountable] (music)- a special effect made on electric musical instruments, especially the guitar, which varies the quality of the soundOxford Collocations DictionaryWah-wah is used before these nouns:
- pedal
Word Origin1920s: imitative.