Meaning of “peter out” in the English Dictionary

british dictionary

(Definition of “peter out” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"peter out" in American English

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peter out

/ˈpi·t̬ər ˈɑʊt/
phrasal verb with peter verb

to be reduced gradually so that nothing is left:

We thought the storm would peter out.

(Definition of “peter out” from the Cambridge Academic Content Dictionary © Cambridge University Press)