Meaning of “run out” - Learner’s Dictionary

run out

phrasal verb with run us uk /rʌn/ verb present participle running, past tense ran, past participle run

B1 to use all of something so that there is none left:

I've nearly run out of money.

B2 If a supply of something runs out, there is none left because it has all been used:

Come on, time is running out.

(Definition of “run out” from the Cambridge Learner’s Dictionary © Cambridge University Press)