To witness the execution of a written instrument, at the request of him who makes lt, and subscribe the same as a witness. white v. Magarahan, 87 Ga. 217, 13 S. E. 509; Logwood v. Hussey, 60 Ala. 424; Arrington v. Arrington, 122 Ala. 510. 26 South. 152. This is also the technical word by which, in the practice in many of the states, a certifying officer gives assurance of the genuineness and correctness of a copy
Source: Black's Law Dictionary 2nd Ed (1910)
