clamp down

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clamp down on (someone or something)

1. Literally, to press down on something firmly. When the dog's teeth clamped down on my leg, I'd never felt so much pain in my life. Now clamp down on this surface so that you don't lose your grip while drilling.
2. To limit, reduce, bring under tighter control. My parents really clamped down on me after seeing my report card, so my curfew is only 9 PM now. We really need to clamp down on spending before our department loses funding altogether. The cops are trying to clamp down on speeding on this stretch, so you should slow down.
See also: clamp, down, on
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.

clamp down (on someone or something)

to become strict with someone; to become strict about something. Because Bob's grades were getting worse, his parents clamped down on him. The police have clamped down on speeders in this town.
See also: clamp, down
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

clamp down

1. To press down tightly on something: Clamp down the pipe securely before you try to drill a hole in it. I glued the strip of wood to the surface and clamped it down while it dried.
2. To prevent or regulate something with increased strictness: The cartel clamped down on oil production in order to raise prices.
3. To punish or repress someone or something with increased strictness: The government plans to clamp down on tax fraud with tough new laws. Crime began to increase, so the police started clamping down.
See also: clamp, down
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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Summary: Thousands of gamers have been barred from playing Xbox Live by Microsoft in an attempt to clamp down on piracy.
As reported last week (see Europolitics 3805), the EU's major economies are fighting it out to overhaul pay structures in the financial sector after the European Commission pledged to clamp down on excessive bonuses in July by revising the Capital Requirements Directives (2006/48/EC and 2006/49/EC).
The solution lies in an immediate clamp down in rogue sickies through putting checks and procedures in place which stamp out unnecessary sick days being taken.
FOOTBALL: Graham Poll has called for referees to be suspended if they fail to clamp down on the abuse they receive from players.
The municipality has said it will clamp down on people who spit in public by fining offenders in a bid to keep Dubai cleaner.
A Birmingham pub company is scrapping happy hours and drinks promotions in a bid to clamp down on binge drinking.
11 security concerns will prompt more demand for his services, as regulators worldwide clamp down on suppliers over bio-terrorism fears.
In particular, last year's bill included several provisions to severely clamp down on the perceived abuse of non-qualified deferred compensation by effectively eliminating the often-used "rabbi trust" as a funding mechanism for such plans.