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English definition of “run down something”

run down something

(FIND) phrasal verb with run    /rʌn/ verb (present participle running, past tense ran  /ræn/, past participle run)
to learn the facts about something after searching for them: The police are running down several leads related to the crime .
(Definition of run down something (FIND) from the Cambridge Academic Content Dictionary © Cambridge University Press)
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