noun

dam

dam, barrier

They built a dam across the river.

They built a dam across the river.

The beaver built a dam of sticks.

The beaver built a dam of sticks.

((a)) dam ((across sth.)) a barrier built across a river or stream A new dam was built across the valley.

Synonyms: barrier, barrage, weir, embankment

From Middle English, from Middle Dutch 'dam'. Related to words meaning to stop or block up.

Imagine a large 'D' shape blocking a river, forming a DAM.

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