1. past tense and past participle of clamp; fastened or held firmly in place with a clamp or similar device
2. pressed or squeezed tightly together

Examples

• The carpenter clamped the wood pieces together while the glue dried.
• She clamped her jaw shut and refused to speak.
• The mechanic clamped the brake line to stop the leak.
• He clamped his hands over his ears to block out the noise.
• The metal sheets were clamped in position during welding.
• The dentist clamped the rubber dam around the tooth.
• Security forces clamped down on the protests.