Found 2 items, similar to Postmarking.
English → English (WordNet) Definition: postmark postmark n : a cancellation mark stamped on mail by postal officials; indicates the post office and date of mailing v : stamp with a postmark to indicate date and time of mailing [syn: frank]
English → English (gcide) Definition: Postmarking Postmark \Post"mark`\, v. t. [imp. & p. p. Postmarked; p. pr. & vb. n. Postmarking.] To mark with a post-office stamp; as, to postmark a letter or parcel. [1913 Webster]