Source : Webster's Revised Unabridged Dictionary (1913)

Jilt \Jilt\, v. i.
   To play the jilt; to practice deception in love; to discard
   lovers capriciously. --Congreve.

Jilt \Jilt\, n. [Contr. fr. Scot. jillet a giddy girl, a
   jill-flirt, dim. of jill a jill.]
   A woman who capriciously deceives her lover; a coquette; a
   flirt. --Otway.

Jilt \Jilt\, v. t. [imp. & p. p. {Jilted}; p. pr. & vb. n.
   {Jilting}.]
   To cast off capriciously or unfeeling, as a lover; to deceive
   in love. --Locke.

Source : WordNet®

jilt
     n : a woman who jilts a lover
     v : cast aside capriciously or unfeelingly; "jilt a lover or a
         bride"