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English definition of “run out”

run out

phrasal verb with run     /rʌn/ verb (running, ran, run)
to finish , use, or sell all of something, so that there is none left : run out of sth We are about to run out of paper and toner . The order for more forms should be placed before we run out.
if a supply of something runs out, all of it has been used or it is completely finished : Oil supplies are low , but they have not run out yet . My patience is beginning to run out.
if a document or official agreement runs out, the period of time for which it is effective finishes : My passport runs out next month .
(Definition of run out from the Cambridge Business English Dictionary © Cambridge University Press)
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