clamp Definition in the Cambridge English Dictionary
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Definition of “clamp” - English Dictionary

Definition of "clamp" - American English Dictionary

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clampnoun [C]

 us   /klæmp/
a ​device used to ​hold something ​tightly: A ​small clamp at the ​bottomedgeholds it in ​place.

clampverb [T always + adv/prep]

 us   /klæmp/
to use a ​device to ​hold something ​tightly: [M] Clamp the ​pieces together while the ​gluedries. If you clamp something, you ​hold it ​firmly so that it does not move: He ​abruptly clamped his ​jawshut.
(Definition of clamp from the Cambridge Academic Content Dictionary © Cambridge University Press)

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 ​firmlysupports the ​pipette in a ​verticalposition.

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 ​metaldevice to one of ​itswheels, usually because it is ​parkedillegally. The ​device is usually only ​removed when the ​ownerpays 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 ​particularplace, you ​hold it there ​tightly: He clamped his ​hand over her ​mouth. A ​heavyironchain was clamped around his ​wrists.
Phrasal verbs
(Definition of clamp from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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