Meaning of “be past your sell-by date” in the English Dictionary

british dictionary

"be past your sell-by date" in British English

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be past your sell-by date

UK If someone is past their sell-by date, that person is not wanted or considered useful any more because they are too old:

There's plenty of time to have a baby. I'm not past my sell-by date yet.

(Definition of “be past your sell-by date” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)