- Wa-wa is defined as baby talk or a slang term used for water.
A baby talk word used for water is an example of wa-wa.
This baby is drinking wa-wa.
wa-wa definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
wa-wa definition by American Heritage Dictionary
Variant of wah-wah.