Junk or debris.
The rocks, crushed shells, and other sea detritus that create an oyster bed, where oyster spawn can attach themselves; a collection of such detritus, accumulated on land, to drop in the sea to build up oyster beds.
An accumulation of small items of little current value -- materials, broken items, miscellaneous fasteners -- for possible future use.
Location where potentially useful junk items are collected: culch corner, culch drawer, culch pile.
To prepare an oyster bed with such (culch) attachments; to sort shellfish or fish catch by size -- most often oysters -- so as to throw back the smallest to grow bigger and breed.
Anything filthy or vile. Dirt; something that makes another thing dirty.
Heroin.
Semen.
Soft (or slimy) manure.
The pile of discarded cards.
Grub, slop, swill
Slimy mud, sludge.
To manure with muck.
To shovel muck.
To vomit.
To do a dirty job.
To pass, to fold without showing one's cards, often done when a better hand has already been revealed.