DuckCorp Dico

Found one definition

1.                 From German - English Ding/FreeDict dictionary ver. 1.9-fd1:
                   
   
   
                   
                     
   Runse /rˈʊnzə/ <fem, n, sg>
    [geol.] gully <n>, gulley <n> [Br.]
      Synonyms: Erosionsrinne, Wattrinne, tiefe Rinne
    see: Erosionsrinnen, Wattrinnen, tiefe Rinnen, Runsen, breite Erosionsrinne