clamp Definition in Cambridge British English Dictionary
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Definition of "clamp" - British English Dictionary

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clampnoun [C]

uk   us   /klæmp/
a device made of wood or metal that is used to hold two things together tightly: Carefully tighten the clamp until it firmly supports the pipette in a vertical position.

clampverb

uk   us   /klæmp/

clamp verb (FASTEN)

[T usually + adv/prep] to fasten two things together, using a clamp: Clamp the two pieces of wood (together) for 15 minutes. [T] mainly UK (US boot) If the police or another person in authority clamps a vehicle, they fix a metal device to one of its wheels, usually because it is parked illegally. The device is usually only removed when the owner pays an amount of money: When I finally got back, I found my car had been clamped.
See also

clamp verb (HOLD TIGHTLY)

[T + adv/prep] If you clamp something in a particular place, you hold it there tightly: He clamped his hand over her mouth. A heavy iron chain was clamped around his wrists.
Phrasal verbs
(Definition of clamp from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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