1 wet soft earthy matter.
2 hard ground from the drying of an area of this.
3 what is worthless or polluting.
Phrases and idioms:
as clear as mud colloq. not at all clear. fling (or sling or throw) mud speak disparagingly or slanderously. here's mud in your eye! colloq. a drinking-toast. mud-bath
1 a bath in the mud of mineral springs, esp. to relieve rheumatism etc.
2 a muddy scene or occasion. mud-brick a brick made from baked mud. mud-flat a stretch of muddy land left uncovered at low tide. mud pack a cosmetic paste applied thickly to the face. mud pie mud made into a pie shape by a child. mud puppy US a large nocturnal salamander, Necturus maculosus, of eastern USA. mud skipper any of various gobies of the family Periophthalmidae, able to leave the water and leap on the mud. mud-slinger colloq. one given to making abusive or disparaging remarks. mud-slinging colloq. abuse, disparagement. mud volcano a volcano discharging mud. one's name is mud one is unpopular or in disgrace.
Etymology: ME mode, mudde, prob. f. MLG mudde, MHG mot bog
Useful english dictionary. 2012.