C1noun3K

Dam

UK /["/dæm/"]/US /["/dæm/"]/

Definition

a barrier that is built across a river in order to stop the water from flowing, used especially to make a reservoir (= a lake for storing water) or to produce electricity

In simple words: A wall that holds back water.

Examples

  • the Narmada dam in India
  • The dam burst.
  • The dam burst and the valley was flooded.
  • The dam has been breached and there is a danger of flooding.
  • The dam holds back the water.
  • a large hydroelectric dam on the Colorado River
  • The dam was quite full after the winter.

Usage notes

Used in engineering and environmental contexts. Avoid using in casual conversation unless discussing water resources or specific projects.

Grammar pattern

standalone noun

Memory hint

Think of a big wall holding back a river — a 'dam' helps prevent floods.

Collocations

  • hydroelectric
  • build
  • construct
  • breach
  • burst
  • break
  • hold something back
  • dam across
  • dam on

Synonyms

  • barrier
  • dike
  • levy
  • weir

Antonyms

  • free passage
  • open flow

Common mistakes

  • Confusing 'dam' with 'damn' (the curse word)
  • Using 'dam' to refer to smaller water barriers like levees
  • Mispronouncing 'dam' with an extra vowel sound