Source : Webster's Revised Unabridged Dictionary (1913)

Surrey \Sur"rey\, n.
   A four-wheeled pleasure carriage, (commonly two-seated)
   somewhat like a phaeton, but having a straight bottom.

Source : WordNet®

Surrey
     n 1: a county in southeastern England on the Thames
     2: a light four-wheeled horse-drawn carriage; has two or four
        seats