COUNTERMARK
Etymology
Noun
countermark (plural countermarks)
A mark or token added to those already existing, as a security or proof.
(farriery) An artificial cavity made in the teeth of horses that have outgrown their natural mark, to disguise their age.
Verb
countermark (third-person singular simple present countermarks, present participle countermarking, simple past and past participle countermarked)
(transitive) To apply a countermark to.
Source: Wiktionary
Coun"ter*mark` (-mrk`), n.
1. A mark or token added to those already existing, in order to
afford security or proof; as, an additional or special mark put upon
a package of goods belonging to several persons, that it may not be
opened except in the presence of all; a mark added to that of an
artificer of gold or silver work by the Goldsmiths' Company of
London, to attest the standard quality of the gold or silver; a mark
added to an ancient coin or medal, to show either its change of value
or that it was taken from an enemy.
2. (Far.)
Definition: An artificial cavity made in the teeth of horses that have
outgrown their natural mark, to disguise their age.
Coun`ter*mark" (koun`tr-mrk"), v. t.
Definition: To apply a countenmark to; as, to countermark silverware; to
countermark a horse's teeth.
Source: Webster’s Unabridged Dictionary 1913 Edition