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English definition of “postmark”


noun [C]    /ˈpoʊstˌmɑrk/
an official mark on letters or packages , showing the place and day , month , and year of mailing postmark    /ˈpoʊstˌmɑrk/ verb [T] Contest entries must be postmarked no later than July 16.
(Definition of postmark noun from the Cambridge Academic Content Dictionary © Cambridge University Press)
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