The Collaborative International Dictionary of English v.0.48:

Dizzy \Diz"zy\, v. t. [imp. & p. p. Dizzied; p. pr. & vb. n.
   Dizzying.]
   To make dizzy or giddy; to give the vertigo to; to confuse.
   [1913 Webster]

         If the jangling of thy bells had not dizzied thy
         understanding.                           --Sir W.
                                                  Scott.