MUD
WordNet
noun
(1) Slanderous remarks or charges
(2) Water soaked soil; soft wet earth
verb
(3) Plaster with mud
(4) Soil with mud, muck, or mire
"The child mucked up his shirt while playing ball in the garden"
WiktionaryText
MUD
- An interactive online environment in which players may jointly engage in fantasy role-playing games.