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TOEFL IELTS BNC: 6532 COCA: 4399

dam

1 of 4

noun (1)

1
a
: a barrier preventing the flow of water or of loose solid materials (such as soil or snow)
a beaver dam
an ice dam
especially, civil engineering : a barrier built across a watercourse for impounding (see impound sense 2) water
b
: a barrier to check the flow of liquid, gas, or air
2
: a body of water confined by a barrier

dam

2 of 4

verb

dammed; damming

transitive verb

1
: to provide or restrain with a barrier that prevents the flow of water : to provide or restrain with a dam (see dam entry 1 sense 1a)
dam a river
2
: to stop up : block
damming up their emotions

dam

3 of 4

noun (2)

zoology : the female parent of an animal and especially of a domestic animal
the foal's dam

dam

4 of 4

abbreviation

dekameter

Example Sentences

Verb ice floes were damming the river

Word History

Etymology

Noun (1) and Verb

Middle English, probably from Middle Dutch; akin to Old English fordemman to stop up

Noun (2)

Middle English dam, dame lady, dam — more at dame

First Known Use

Noun (1)

14th century, in the meaning defined at sense 2

Verb

15th century, in the meaning defined at sense 1

Noun (2)

13th century, in the meaning defined above

Time Traveler
The first known use of dam was in the 13th century

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