clamp verb clamps; clamped; clamp·ing
▪ The surgeon clamped the vein. ▪ He clamped the two pieces of wood together.
2 : to press or squeeze (something)
▪ The bit was clamped firmly between the horse’s teeth. ▪ He clamped his mouth shut and refused to speak.
3 Brit : 2boot 4
▪ Customs officials are clamping down on [=cracking down on] smugglers. ▪ The school should clamp down on students who cut classes. : to work harder to stop (a crime) ▪ The state is clamping down on [=cracking down on] drug trafficking. — see also clampdown
▪ The mayor clamped [=imposed] a curfew on the area after the riots. ▪ The new law clamps limits on the amount of money candidates can spend on election campaigns.