In IBS, there may be increased mucus production by the lining of the intestine. That mucus is then passed in the stool. Mucus is more often associated with diarrhea-predominant IBS than with constipation-predominant IBS or alternating type IBS (IBS-A).
MUD. n. A computer program, usually running over the Internet, that allows multiple users to participate in virtual-reality role-playing games.
mudslide (plural mudslides) 1  A geological event in which viscous mud flows down an incline. 2  A mixed drink consisting of vodka, Kahlua and Bailey's.