postmark
/ˈpoʊstmɑːrk/
noun
- An official mark stamped on a piece of mail showing the date and place of mailing.
- The postmark showed that the letter had been sent three weeks ago.
- The envelope had a clear postmark from London dated March 15.
- Collectors often look for rare postmarks on old stamps.
verb
- To stamp mail with an official mark showing the date and place of mailing.
- The clerk postmarked the package before loading it onto the truck.
- Make sure the envelope is postmarked by the deadline to avoid a late fee.
- All letters are postmarked at the main sorting facility.