DuckCorp

DuckCorp Dico

(RFC 2229 compliant dictionary server)
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Found one definition 

  1.                 From The Free On-line Dictionary of Computing (19 January 2023):
                

    
                
                  
    DLL
    

       1. <networking> Data Link Layer.
    

       2. <library> Dynamically Linked Library.
    

       3. Dial Long Line equipment.
    

       (2000-04-05)