: to stamp on the back
specifically
: to stamp (a piece of mail) with the date of receipt and the name of the receiving post office along the transportation route
"
: a stamp (such as a date stamp or postmark) on the back of a piece of mail
Dictionary Entries Near backstamp
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“Backstamp.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/backstamp. Accessed 25 Nov. 2024.
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