Definition of perjures:
(v) :
(reflexive) To knowingly and willfully make a false statement of witness while in court.
(v) :
(transitive) 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.
(v) :
(transitive) To make a false oath to; to deceive by oaths and protestations.
(n) :
(obsolete) A perjured person.