Muck

Webster's Practical Dictionary- A Practical Dictionary of the Englih Language · 1884 · p. 270

muk, n. Dung in a moist state; a ma of caying vegetable matter; black swamp earth taining decornposed vegetable matter; peat; thing mean, vile, or filthy. — v. t. To manure muck. Muck. See Amuck.