What does "oxbow lake" mean?

A crescent-shaped lake formed near a flat-valleyed river when one of its meanders becomes pinched off and isolated.

What is a synonym for "oxbow lake"?

Common synonyms include: cistern, dam, dike, fishpond, lagoon, loch.

noun

noun ·Rare ·Advanced level

Noun

1
A crescent-shaped lake formed near a flat-valleyed river when one of its meanders becomes pinched off and isolated.
"Humans called this an oxbow lake—one that had originally been part of the river."
2
a crescent-shaped lake (often temporary) that is formed when a meander of a river is cut off from the main channel wordnet

"Humans called this an oxbow lake—one that had originally been part of the river."