WordNet (r) 3.0 (2006):

subornation of perjury
    n 1: (law) inducing someone to make a false oath as part of a
         judicial proceeding; "to prove subordination of perjury you
         must prove the perjury and also prove that the perjured
         statement was procured by the accused suborner who knew
         that it would be false"

Bouvier's Law Dictionary, Revised 6th Ed (1856):

SUBORNATION OF PERJURY, crim. law. The procuring another to commit legal
perjury, who in consequence of the persuasion takes the oath to which be has
been incited. Hawk. B. 1, c. 69, s. 10.
     2. To complete the offence, the false oath must be actually taken, and
no abortive attempt (q.v.) to solicit will complete the crime. Vide To
Dissuade; To persuade.
     3. But the criminal solicitation to commit perjury, though
unsuccessful, is a misdemeanor at common law. 2 East, Rep. 17; 6 East, R.
464; 2 Chit. Crim. Law, 317; 20 Vin. Ab. 20. For a form of an indictment for
an attempt to suborn a person to commit perjury, vide 2 Chit. Cr. Law, 480;
Vin. Ab. h.t.
     4. The act of congress of March 3, 1825, Sec. 13, provides, that if any
person shall knowingly or willfully procure any such perjury, mentioned in
the act, to be committed, every such person so offending, shall be guilty of
subornation of perjury, and shall, on conviction thereof, be punished by
fine, not exceeding two thousand dollars, and by imprisonment and
confinement to hard labor, not exceeding five years, according to the
aggravation of the offence.