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

But all ballots received after election day require a postmark showing they were sent on or before that date, and that any ballot with a postmark after election day would not count. —Christina A. Cassidy, Los Angeles Times, 13 June 2025

The carrier envelope must have a postmark showing it was mailed by 7:00 p.m. Tuesday. —Brandi D. Addison, Austin American-Statesman, 29 Oct. 2024

Verb

But ballots received after election day, in addition to being signed and dated by the voter, must be postmarked by the U.S. Postal Service indicating they were completed and dropped off on or before the final day of voting. —Christina A. Cassidy, Los Angeles Times, 6 July 2025

New York City allows mail-in ballots postmarked by primary day to be counted, so some outstanding ballots may be added to the total in the coming weeks. —Jared Gans, The Hill, 1 July 2025

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