To do a dirty job.
To manure with muck.
To shovel muck.
To vomit.
To pass, to fold without showing one's cards, often done when a better hand has already been revealed.
Heroin.
Semen.
Soft (or slimy) manure.
The pile of discarded cards.
Anything filthy or vile. Dirt; something that makes another thing dirty.
Grub, slop, swill
Slimy mud, sludge.
To dirty; to make dirty.
To harm the reputation of; to smear or slander.
A chirp of radiation power from an astronomical body that has a smeared appearance on its plot in the time-frequency plane (usually associated with massive bodies orbiting supermassive black holes)
A stain on somebody's reputation.
Dirt, or a stain.