DuckCorp Dico

Found one definition

1.                 From German - English Ding/FreeDict dictionary ver. 1.9-fd1:
                   
   
   
                   
                     
   geritten /ɡərˈɪtən/
   ridden
         "er/sie ist/war geritten"  - he/she has/had ridden
         "Bist du schon mal geritten?"  - Have you ever been riding?
      Synonym: rittlings gesessen
    see: reiten, rittlings sitzen, reitend, rittlings sitzend, er/sie reitet, ich/er/sie ritt, reiten gehen, ausreiten