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Noun: postmark  'powst,maa(r)k
  1. A cancellation mark stamped on mail by postal officials; indicates the post office and date of mailing
Verb: postmark  'powst,maa(r)k
  1. Stamp with a postmark to indicate date and time of mailing
    - frank

Derived forms: postmarking, postmarked, postmarks

Type of: mark, marker, marking, stamp

Encyclopedia: Postmark