The Collaborative International Dictionary of English v.0.48:

Suitor \Suit"or\, n.
   1. One who sues, petitions, or entreats; a petitioner; an
      applicant.
      [1913 Webster]

            She hath been a suitor to me for her brother.
                                                  --Shak.
      [1913 Webster]

   2. Especially, one who solicits a woman in marriage; a wooer;
      a lover. --Sir P. Sidney.
      [1913 Webster]

   3.
      (a) (Law) One who sues or prosecutes a demand in court; a
          party to a suit, as a plaintiff, petitioner, etc.
      (b) (O. Eng. Law) One who attends a court as plaintiff,
          defendant, petitioner, appellant, witness, juror, or
          the like.
          [1913 Webster]

WordNet (r) 3.0 (2006):

suitor
    n 1: a man who courts a woman; "a suer for the hand of the
         princess" [syn: suitor, suer, wooer]