postmark

1 of 2

noun

post·​mark ˈpōs(t)-ˌmärk 

: an official postal marking on a piece of mail

specifically : a mark showing the post office and date of mailing

postmark

2 of 2

verb

postmarked; postmarking; postmarks

transitive verb

: to put a postmark on

Examples of postmark in a Sentence

Verb

The package was postmarked 13 February.

Recent Examples on the Web

Noun

There are mounting concerns that mail ballots could be rejected for late postmarks. — ABC News, 28 Sep. 2026

The agency's ongoing reorganization has also affected when mail gets a postmark, which is often used to determine whether a mail-in ballot was sent on time. — Hansi Lo Wang, NPR, 23 Sep. 2026

Verb

Mail-in entries must be postmarked by the end of the Promotion Period and received no later than five (5) days later. — Allure, 2 Oct. 2026

However, the Secretary of State's office notes that is the day the application should be received, not postmarked. — Matthew Ablon, CBS News, 29 Sep. 2026

Word History

First Known Use

Noun

1678, in the meaning defined above

Verb

1716, in the meaning defined above

Rhymes for postmark

• ballpark
• benchmark
• birthmark
• daymark
• earmark
• embark
• hallmark
• landmark
• monarch
• remark
• skylark
• tetrarch

Kids Definition

postmark

noun

post·​mark

-ˌmärk

: a mark canceling the postage stamp on a piece of mail and giving the date and place of sending

postmark verb