Muck
/mʌk/
noun
(slimy) mud, sludge.
“I need to clean the muck off my shirt.”
Soft (or slimy) manure.
Anything filthy or vile. Dirt; something that makes another thing dirty.
“What's that green muck on the floor?”
verb
To shovel muck.
“We need to muck the stable before it gets too thick.”
To manure with muck.
To do a dirty job.