clamp down

phrasal verb·1 sense·particle down

Usefulness

Meanings

1

Impose strict control

Why “down”? Something is pressed down and kept from rising again.

Authorities clamped down on illegal parking.
Authorities began strictly enforcing rules against illegal parking.
The school clamped down on cheating.
The school began to control cheating strictly.

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Authorities clamped down on illegal parking. What does it mean?

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