# bayou

/ˈbaɪu/ (US) · /bˈaɪuː/ (UK) · CEFR C2 · Noun

Source: https://englishreference.com/word/bayou
Updated: 2026-05-08

## Definition

a slow-moving stream or a swampy area of water. You usually find these in the flat, low parts of the southern United States.

For teachers: a marshy outlet of a lake or river, or a slow-moving body of water found in flat, low-lying areas. Primarily used in the context of the Gulf Coast region of the United States.

## Examples

- We took a small boat out into the bayou to see the trees.
- The local guide navigated the narrow channels of the bayou, pointing out alligators resting among the cypress roots.
- The unique ecosystem of the Louisiana bayou provides a critical habitat for diverse wildlife while acting as a natural buffer against the storm surges that frequently threaten the coastline.

## Usage notes

- Often used as a proper noun when naming specific geographic features in the southern United States.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.