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

Late-arriving ballots or late postmarks disenfranchised tens of thousands of voters in California, Oregon and Washington, which mail ballots to all voters, during this year's primaries. — ABC News, 3 Nov. 2026

Also, the postmark was from an office within walking distance of the palace. — John Ficarra, New York Daily News, 27 Oct. 2026

Verb

Mississippi also permits mail-in ballots that arrive within five days after Election Day, so long as they were postmarked by Election Day, to be counted. — Chantelle Lee, Time, 5 Nov. 2026

Election results will not be certified for several days as the elections office continues to count provisional and mail-in ballots postmarked Tuesday but arriving after the election. — Carolyn Stein, Chicago Tribune, 5 Nov. 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