dam
B1Neutral, technical (engineering, environmental science)
Definition
Meaning
A barrier constructed to hold back water and raise its level, forming a reservoir, lake, or other body of water.
The water or body of water held back by such a barrier. In broader contexts, any barrier that stops or restricts the flow of something, including emotions, information, or resources. The term is also used for the female parent of a domesticated animal, especially in livestock breeding.
Linguistics
Semantic Notes
Noun senses (barrier, body of water, mother animal) are dominant. The verb sense (to obstruct) is closely related to the barrier meaning. The use for a female animal is more specialized (e.g., 'the dam of this racehorse').
Dialectal Variation
British vs American Usage
Differences
No significant differences in primary meanings. The term 'weir' is sometimes used in the UK for smaller flow-control structures, where 'dam' implies a larger barrier.
Connotations
In both, the word carries neutral to positive connotations related to water management and hydroelectric power. Potential negative connotations relate to environmental impact or catastrophic failure (e.g., 'dam burst').
Frequency
Equally common in both varieties. Technical discourse in engineering is identical.
Vocabulary
Collocations
Grammar
Valency Patterns
VERB + dam: build, construct, breach, demolishDAM + VERB: hold back, regulate, generate (power), burst, overflowto dam (verb) + OBJECT (river, stream)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “dam up (one's emotions/tears)”
- “like water behind a dam (describing pent-up force or emotion)”
- “a dam burst of (e.g., protests, creativity)”
Usage
Context Usage
Business
Used in project financing and risk assessment for large infrastructure projects (e.g., 'The dam project secured international funding').
Academic
Central term in civil engineering, hydrology, and environmental studies (e.g., 'The study assessed the dam's impact on sediment flow').
Everyday
Common in news about weather, energy, or disasters (e.g., 'The village was evacuated after the dam warning').
Technical
Precise term for a hydraulic structure designed for water storage, flow control, or power generation.
Examples
By Part of Speech
verb
British English
- The beavers worked to dam the stream.
- Plans to dam the valley faced strong opposition from conservationists.
American English
- They dammed the creek to create a small pond.
- The government proposed damming the river for irrigation.
adjective
British English
- The dammed water formed a new lake.
- The dam construction site was heavily secured.
American English
- The dammed-up river flooded the upstream wetlands.
- The dam safety inspection is scheduled for next month.
Examples
By CEFR Level
- We visited a large dam on our school trip.
- The dam holds back a lot of water.
- Beavers make dams from wood and mud.
- The new dam will provide electricity for the region.
- After heavy rains, water was released from the dam.
- The ancient dam was built to control flooding.
- Environmentalists argue that the dam disrupts the river's ecosystem.
- The hydroelectric dam significantly contributes to the country's renewable energy mix.
- Engineers are monitoring the dam for signs of structural stress.
- The geopolitical implications of damming a transnational river are profound.
- Decades of sediment accumulation behind the dam have altered the downstream coastline.
- The novelist used the dam as a metaphor for societal repression.
Learning
Memory Aids
Mnemonic
Imagine a beaver building a DAM to stop a river's flow. The letters D-A-M can stand for 'Diverts A Mainstream'.
Conceptual Metaphor
A DAM is a RESTRAINT or BLOCKAGE for emotions, information, or forces (e.g., 'She finally broke the dam of her grief').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Не путать с 'damn' /dæm/ (проклятие, черт). 'Dam' и 'damn' - омофоны.
- Русское 'дам' (форма глагола 'дать') не имеет отношения.
- Основной перевод - 'плотина' (структура), 'водохранилище' (вода за плотиной). Для животного - 'матка' (родительница).
Common Mistakes
- Misspelling as 'damm'.
- Confusing 'dam' (structure) with 'damn' (curse/swear word) in writing.
- Using the verb 'to dam' without an object (e.g., 'They decided to dam' is incomplete; needs 'the river').
Practice
Quiz
In livestock breeding, what does the term 'dam' specifically refer to?
FAQ
Frequently Asked Questions
Yes, it's a B1-level word. It's common in general contexts (news, geography) and essential in technical fields like engineering.
A dam is built across a river valley to hold back water, creating a reservoir. A dyke/dike is typically an embankment built along a river or the sea to prevent flooding of adjacent land, not necessarily creating a reservoir.
Yes, it means to build a dam across a river or stream, or figuratively to block something (e.g., 'dam the flow of information'). The past tense is 'dammed'.
Remember: 'dam' has to do with water (both contain 'a' and no 'n'). 'Damn' is about condemnation or expressing anger (contains 'n'). In speech, they sound identical.