Billabong
WordNet
noun
(1) A branch of a river made by water flowing from the main stream only when the water level is high
(2) A stagnant pool of water in the bed of a stream that flows intermittently
WiktionaryText
Noun
- A stagnant pool of water.
- A streambed that is only filled with water during the rainy season.
- A channel that dead-ends which extends from the main part of a river.
- An oxbow lake.