Source : Webster's Revised Unabridged Dictionary (1913)

Suborn \Sub*orn"\, v. t. [imp. & p. p. {Suborned}; p. pr. & vb.
   n. {Suborning}.] [F. suborner, L. subornare; sub under,
   secretly + ornare to furnish, provide, equip, adorn. See
   {Ornament}.]
   1. (Law) To procure or cause to take a false oath amounting
      to perjury, such oath being actually taken. --Sir W. O.
      Russell.

   2. To procure privately, or by collusion; to procure by
      indirect means; to incite secretly; to instigate.

            Thou art suborned against his honor.  --Shak.

            Those who by despair suborn their death. --Dryden.

Source : WordNet®

suborn
     v 1: incite to commit a crime or an evil deed; "He suborned his
          butler to cover up the murder of his wife"
     2: procure (false testimony or perjury)
     3: induce to commit perjury or give false testimony; "The
        President tried to suborn false witnesses"