crackdown noun
ADJ. bloody, violent | army, government, military, police
VERB + CRACKDOWN promise, threaten | call for, demand, order The government has ordered a crackdown on truancy. | have, launch, mount
PREP. ~ on They're having a crackdown on private phone calls from the office.
You can also check other dicts: crackdown (English, 中文解释 ), wordnet sense, Collins Definition