DuckCorp Dico

Found one definition

1.                 From The Collaborative International Dictionary of English v.0.48:
                   
   
   
                   
                     
   Stopple \Stop"ple\, v. t. [imp. & p. p. Stoppled; p. pr. & vb.
      n. Stoppling.]
      To close the mouth of anything with a stopple, or as with a
      stopple. --Cowper.
      [1913 Webster]