Definition, Meaning & Synonyms

weir

noun
/wɪər/
Definition
A weir is a low dam built across a river or stream to raise the water level or regulate its flow.
Examples
  • The fishermen set up their nets near the weir to catch fish.
  • The weir helped to stabilize the river’s flow during dry seasons.
  • Water levels were noticeably higher behind the weir compared to downstream.
Meaning
It is typically used to control the flow of water in waterways or to create a stilling basin for measuring the flow of a river.
Synonyms
  • dam
  • barrier
  • weir dam