To engage in bouldering.
A particle greater than 256 mm in diameter, following the Wentworth scale
A large marble, in children's games.
A session of bouldering; involvement in bouldering.
A large mass of stone detached from the surrounding land.
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.