1. A marching back; retrocession.

2. (Mil.)

Defn: An evolution by which a body of troops change front or reverse the direction of march while retaining the same men in the front rank; also, a movement by which the rear rank becomes the front one, either with or without changing the right to the left.

3. A change of measures; alteration of conduct. Such countermarches and retractions as we do not willingly impute to wisdom. T. Burnet.

COUNTERMARK
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.)

Defn: An artificial cavity made in the teeth of horses that have outgrown their natural mark, to disguise their age.

COUNTERMARK
Coun`ter*mark" (koun`tr-mrk"), v. t.

Defn: To apply a countenmark to; as, to countermark silverware; to countermark a horse's teeth.