DuckCorp Dico

Found one definition

1.                 From fr.wiktionary.org:
                   
   
   
                   
                     
   [mud]
   
   ** [fr]
   
   *** [étymologie]
    De l' [en] , sigle de _multi-user dungeon_ .
   *** [nom]
   MUD [m]
   
    1. [jeux vidéo]  Multi-user dungeon .
   *** [prononciation]
   
    - [lang=fr]