Weir
/wˈir/
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Definition
(noun) An adjustable dam placed across a river to regulate the flow of water downstream.
Sentence Examples
There was a weir across the river here, but it never caught many fish.
The lock on the weir was released for the boat to pass through.
CEFR Practice Quiz
A ____ is a small dam that is built across a river to control the flow of several water through it today.