Rubbish; debris; refuse.
Empty oyster shells and other substances laid down on oyster grounds to furnish points for the attachment of the spawn of the oyster.
Young or seed oysters together with the shells and other objects to which they are usually attached.
Litter and discarded refuse.
Large rock fragments left by a melting glacier etc.
Rubble, wreckage, scattered remains of something destroyed.
The ruins of a broken-down structure.