Definitions:
" ornamental or decorative work resembling rocks or shells.

rocks and shells used to create ornamental figures and designs as decoration for a grotto or other garden feature. compare ""rocaille"". chiefly historical after 18th century.

a natural mass or group of rocks.

stones roughly piled together in imitation of natural rocks as an ornamental garden feature, especially a rockery.

masonry with a rough projecting face, giving the appearance of natural, freshly quarried rock. compare rustic work.

rock climbing.

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