1. A part corresponding to another part; anything which answers, or corresponds, to another; a copy; a duplicate; a facsimile.
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.
2. Law One of two corresponding copies of an instrument; a duplicate.
3. A person who closely resembles another.
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.
Of our soft sex, well are you made our lords. --Dryden.
n 1: a person or thing having the same function or
characteristics as another [syn: opposite number, vis-a-vis]
2: a duplicate copy [syn: similitude, twin]