- 1[transitive] to hold something tightly, or fasten two things together, with a clamp clamp A to B Clamp one end of the plank to the edge of the table. clamp A and B (together) Clamp the two halves together until the glue dries.
- 2[transitive, intransitive] to hold or fasten something very tightly so that it does not move; to be held tightly clamp something + adv./prep. He had a cigar clamped between his teeth. She clamped a pair of headphones over her ears. I clamped a hand on his shoulder. A mobile phone was clamped to her ear. + adv./prep. Her lips clamped tightly together. clamp (something) + adj. He clamped his mouth shut. Phrasal Verbsclamp down (on somebody/something)clamp something on somebody
NAmE//klæmp//Verb Forms present simple I / you / we / they clamp
he / she / it clamps
past simple clamped
-ing form clamping