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counterstamp

American  
[koun-ter-stamp, koun-ter-stamp] / ˈkaʊn tərˌstæmp, ˈkaʊn tərˈstæmp /

noun

  1. a stamp added to a stamped paper or document as a qualifying mark.

  2. Numismatics.  countermark.

verb (used with object)

  1. to stamp (a paper or document) already stamped.

  2. Numismatics.  countermark.

Etymology

Origin of counterstamp

counter- + stamp

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.