Source : Webster's Revised Unabridged Dictionary (1913)

Perjure \Per"jure\, v. t. [imp. & p. p. {Perjured}; p. pr. & vb.
   n. {Perjuring}.] [F. parjurer, L. perjurare, perjerare; per
   through, over + jurare to swear. See {Jury}.]
   1. To cause to violate an oath or a vow; to cause to make
      oath knowingly to what is untrue; to make guilty of
      perjury; to forswear; to corrupt; -- often used
      reflexively; as, he perjured himself.

            Want will perjure The ne'er-touched vestal. --Shak.

   2. To make a false oath to; to deceive by oaths and
      protestations. [Obs.]

            And with a virgin innocence did pray For me, that
            perjured her.                         --J. Fletcher.

   Syn: To {Perjure}, {Forswear}.

   Usage: These words have been used interchangeably; but there
          is a tendency to restrict perjure to that species of
          forswearing which constitutes the crime of perjury at
          law, namely, the willful violation of an oath
          administered by a magistrate or according to law.

Perjured \Per"jured\, a.
   Guilty of perjury; having sworn falsely; forsworn. --Shak.
   ``Perjured persons.'' --1 Tim. i. 10. ``Their perjured
   oath.'' --Spenser.