Culch (also cultch) (noun)
khulch
The stones, old shells, etc., forming an oyster bed and furnishing points of attachment for the spawn of oysters. / the spawn of oysters.
First recorded in 1660–70; perhaps metathetic variant of clutch (as in eggs); but note Old French culche couch
Example sentences
“We searched the estuary culch for oysters at the receding tide.”