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. [ 1913 Webster ]

2. (Far.) An artificial cavity made in the teeth of horses that have outgrown their natural mark, to disguise their age. [ 1913 Webster ]

v. t. To apply a countermark to; as, to countermark silverware; to countermark a horse's teeth. [ 1913 Webster ]

n. 1. A part corresponding to another part; anything which answers, or corresponds, to another; a copy; a duplicate; a facsimile. [ 1913 Webster ]

In same things the laws of Normandy agreed with the laws of England, so that they seem to be, as it were, copies or counterparts one of another. Sir M. Hale. [ 1913 Webster ]

2. (Law) One of two corresponding copies of an instrument; a duplicate. [ 1913 Webster ]

3. A person who closely resembles another. [ 1913 Webster ]

4. A thing may be applied to another thing so as to fit perfectly, as a seal to its impression; hence, a thing which is adapted to another thing, or which supplements it; that which serves to complete or complement anything; hence, a person or thing having qualities lacking in another; an opposite. [ 1913 Webster ]

O counterpart
Of our soft sex, well are you made our lords. Dryden. [ 1913 Webster ]

n. 1. A part corresponding to another part; anything which answers, or corresponds, to another; a copy; a duplicate; a facsimile. [ 1913 Webster ]

In same things the laws of Normandy agreed with the laws of England, so that they seem to be, as it were, copies or counterparts one of another. Sir M. Hale. [ 1913 Webster ]

2. (Law) One of two corresponding copies of an instrument; a duplicate. [ 1913 Webster ]

3. A person who closely resembles another. [ 1913 Webster ]

4. A thing may be applied to another thing so as to fit perfectly, as a seal to its impression; hence, a thing which is adapted to another thing, or which supplements it; that which serves to complete or complement anything; hence, a person or thing having qualities lacking in another; an opposite. [ 1913 Webster ]

O counterpart
Of our soft sex, well are you made our lords. Dryden. [ 1913 Webster ]