/ Dictionary / Index C countermark: Meaning and Definition of Find definitions for: coun•ter•mark Pronunciation: (n.koun'tur-märk"v.koun"tur-märk'), [key] — Numis. Numis. —n. Also calleda sign or device stamped on a coin after its minting. —v.t. to stamp (a coin) with a countermark; counterstamp. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. countermarch countermeasure Related Content Daily Word Quiz: knead Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language