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TOEFL IELTS BNC: 6532 COCA: 4399

dam

1 dam /ˈdæm/ noun
plural dams
1 dam
/ˈdæm/
noun
plural dams
Learner's definition of DAM
[count]
: a structure that is built across a river or stream to stop water from flowing水坝;堤坝
compare 3dam
2 dam /ˈdæm/ verb
dams; dammed; damming
2 dam
/ˈdæm/
verb
dams; dammed; damming
Learner's definition of DAM
[+ object]
: to build a dam across (a river or stream)(在河上)筑坝
often + up
3 dam /ˈdæm/ noun
plural dams
3 dam
/ˈdæm/
noun
plural dams
Learner's definition of DAM
[count] technical
: the female parent of some animals (such as horses)母兽;母畜
compare 1sire
compare 1dam
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
TOEFL IELTS BNC: 6532 COCA: 4399
dam

noun

ADJECTIVE | VERB + DAM | DAM + VERB | PREPOSITION ADJECTIVEhydroelectric水電壩VERB + DAMbuild, construct建造水壩breach沖破水壩The dam has been breached and there is a danger of flooding.水壩已經決口了,有發洪水的危險。DAM + VERBburst水壩決口The dam burst and the valley was flooded.水壩決口,山谷被淹了。break (figurative, especially NAmE) 垮壩I began to cry-it was as if a dam had broken inside me.我哭了起來 - 哭得眼淚好像決堤之水。hold sth back水壩擋住⋯The dam holds back the water.大壩把水擋住。PREPOSITIONdam across, dam on跨越⋯的水壩a large hydroelectric dam on the Colorado River橫跨科羅拉多河的大型水電壩

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