weir

/wɪə(r)/ (bre, ipa) · [wˈir] /wɪr/ (ame, ipa) · [wˈir] /ˈwer How to pronounce weir (audio) ˈwir How to pronounce weir (audio)/ (ame, mw)

weir — noun

  • weirsingular
  • weirsplural

1. a low barrier built from one bank to the other so flowing water rises a little,

1.名詞C2
釋義

a low barrier built from one bank to the other so flowing water rises a little, is guided elsewhere, or can be measured as it goes by.

例句

Workers repaired the stone weir before the winter rains filled the channel.

a stone weir — fixed river structure

Water poured over the old weir beside the mill after last night's storm.

water flows over a weir

同義詞
  • dam

    broader and usually larger; often built to store a large body of water

  • barrage

    engineering term for a gated barrier across a wider river

  • barrier

    general word that does not specifically imply water control

文法句型

a stone weir

water flows over a weir

open the weir gate

用法筆記

Used for a low barrier that water can pass over. Distinguish it from a dam, which is usually larger and mainly built to hold back a much greater amount of water.

常見錯誤

❌The city built a huge weir to create a deep lake behind it.
✅The city built a huge dam to create a deep lake behind it.
💡A weir is usually a low barrier for flow control, not a large reservoir wall.

2. a fence-like barrier fixed across shallow water to guide fish into one place and

2.名詞C2
釋義

a fence-like barrier fixed across shallow water to guide fish into one place and stop them from swimming away.

例句

At low tide, the family checked the weir for mullet trapped inside.

check the weir for fish

The old fishing village once used a wooden weir at the river mouth.

a wooden weir for catching fish

同義詞
  • fish trap

    broad modern term for any device used to catch fish

  • fish fence

    describes the fence-like shape directly, though it is less formal

  • trap

    general word and not specific to a structure built in water

文法句型

a wooden weir

check the weir for fish

fish in the weir

用法筆記

This older sense belongs to fishing, not river engineering. The focus is on catching or holding fish, while sense 1 is about managing the movement or level of water.

常見錯誤

❌The farmers raised the weir to water the rice fields.
✅The fishers checked the weir at dawn for trapped fish.
💡In this sense, a weir is a fishing barrier, not an irrigation structure.