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countermark

American  
[koun-ter-mahrk, koun-ter-mahrk] / ˈkaʊn tərˌmɑrk, ˌkaʊn tərˈmɑrk /

noun

  1. Also called counterstamp.  a sign or device stamped on a coin after its minting.

verb (used with object)

  1. to stamp (a coin) with a countermark; counterstamp.

Etymology

Origin of countermark

1495–1505; (noun) < Middle French contremarque, equivalent to contre counter- + marque mark 1; (v.) < Middle French contremarquer, derivative of contremarque

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.