look up any word, like thot:

1 definition by yupp

 
1.
MU
Multi-user: Multiple users.
Often used for online games or puzzles, originally for one person, that has been adapted or recreated for multiple users.
OR:
- Collaborative
- anything implying multiple users

See also MUD (Multi User Dimension, Dungeon or Domain)
Multi user game, Multi user version, Multi user solitaire card game.
by yupp October 28, 2007