mud

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Wet, sticky, soft earth, as on the banks of a river.
2. n. Slang Wet plaster, mortar, or cement.
3. n. Slanderous or defamatory charges or comments: slinging mud at his opponent.
4. v. To cover or spatter with or as if with mud.

Century Dictionary and Cyclopedia

1. n. Moist and soft earth or earthy matter, whether produced by rains on the earthy surface, by ejections from springs and volcanoes, or by sediment from turbid waters; mire.
2. To bury in mud or mire; cover or bedaub with mud.
3. To make turbid or foul with dirt; stir the sediment in (liquors).
4. To go in or under the mud, for refuge or warmth, as does the eel.
5. To fill with mud or soft clay, as the crevices between the logs in a log house.

Wiktionary

1. n. A mixture of water and soil or fine grained sediment.
2. n. A plaster-like mixture used to texture or smooth drywall.
3. n. Wet concrete as it is being mixed, delivered and poured.
4. n. figuratively Willfully abusive, even slanderous remarks or claims, notably between political opponents.
5. n. slang Money, dough, especially when proceeding from dirty business.
6. n. slang stool that is exposed as a result of anal sex
7. n. geology A particle less than 62.5 microns in diameter, following the Wentworth scale
8. v. transitive To make muddy, dirty
9. v. transitive To make turbid
10. v. intransitive, Internet To participate in a MUD, or multi-user dungeon.

GNU Webster's 1913

1. n. Earth and water mixed so as to be soft and adhesive.
2. v. rare To bury in mud.
3. v. To make muddy or turbid.

WordNet 3.0

1. v. plaster with mud
2. n. slanderous remarks or charges
3. v. soil with mud, muck, or mire
4. n. water soaked soil; soft wet earth