Source : Webster's Revised Unabridged Dictionary (1913)

Swinge \Swinge\, v. t. [imp. & p. p. {Swinged} (sw[i^]njd); p.
   pr. & vb. n. {Swingeing} (sw[i^]nj"[i^]ng).] [OE. swengen,
   AS. swengan to shake, causative of swingan. See {Swing}.]
   1. To beat soundly; to whip; to chastise; to punish.

            I had swinged him soundly.            --Shak.

            And swinges his own vices in his son. --C. Dryden.

   2. To move as a lash; to lash. [Obs.]

            Swinges the scaly horror of his folded tail.
                                                  --Milton.

Swingeing \Swinge"ing\, a.
   Huge; very large. [Colloq.] --Arbuthnot. --Byron. --
   {Swinge"ing*ly}, adv. --Dryden.

Source : WordNet®

swingeing
     adj : severe; punishingly bad; "swingeing taxation"; "swingeing
           damages awarded by the judge"