post ‧ mark /ˈpəʊstmɑːk $ ˈpoʊstmɑːrk/ BrE AmE noun [countable]
an official mark made on a letter, package etc to show when and where it was posted
—postmark verb [transitive] :
The letter was postmarked Iowa.
post ‧ mark /ˈpəʊstmɑːk $ ˈpoʊstmɑːrk/ BrE AmE noun [countable]
an official mark made on a letter, package etc to show when and where it was posted
—postmark verb [transitive] :
The letter was postmarked Iowa.
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012