DuckCorp Dico

Found one definition

1.                 From The Collaborative International Dictionary of English v.0.48:
                   
   
   
                   
                     
   Stope \Stope\, v. t. [imp. & p. p. Stoped; p. pr. & vb. n.
      Stoping.] (Mining)
      (a) To excavate in the form of stopes.
      (b) To fill in with rubbish, as a space from which the ore
          has been worked out.
          [1913 Webster] Stope