The Collaborative International Dictionary of English v.0.48:

Fainting \Faint"ing\, n.
   Syncope, or loss of consciousness owing to a sudden arrest of
   the blood supply to the brain, the face becoming pallid, the
   respiration feeble, and the heat's beat weak.
   [1913 Webster]

   Fainting fit, a fainting or swoon; syncope. [Colloq.]
      [1913 Webster]