Source : Webster's Revised Unabridged Dictionary (1913)

Swoon \Swoon\, v. i. [imp. & p. p. {Swooned}; p. pr. & vb. n.
   {Swooning}.] [OE. swounen, swoghenen, for swo?nien, fr.
   swo?en to sigh deeply, to droop, AS. sw[=o]gan to sough,
   sigh; cf. gesw[=o]gen senseless, swooned, gesw[=o]wung a
   swooning. Cf. {Sough}.]
   To sink into a fainting fit, in which there is an apparent
   suspension of the vital functions and mental powers; to
   faint; -- often with away.

         The sucklings swoon in the streets of the city. --Lam.
                                                  ii. 11.

         The most in years . . . swooned first away for pain.
                                                  --Dryden.

         He seemed ready to swoon away in the surprise of joy.
                                                  --Tatler.