- Main Entry:
- bay·ou

- Pronunciation:
-
\ˈbī-(ˌ)ü, -(ˌ)ō\
- Function:
- noun
- Etymology:
- Louisiana French, from Choctaw bayuk
- Date:
- 1763
1
: a creek, secondary watercourse, or minor river that is tributary to another body of water
2
: any of various usually marshy or sluggish bodies of water