DuckCorp

DuckCorp Dico

(RFC 2229 compliant dictionary server)
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Found one definition 

  1.                 From English - Polish Piotrowski+Saloni/FreeDict dictionary ver. 0.2:
                

    
                
                  
    op.
I.
   See also: opus
  dzieło
II.
   See also: operation
  działanie