An ostreolith.

Acanthus mollis (bear's breeches), native to the Mediterranean / Mertensia maritima (oysterleaf, sea lungwort, sea bluebell), native to Europe and North America with leaves said to taste like oysters

(chiefly in the plural) A baked or broiled oyster topped with various other ingredients: often parsley and other green herbs, a rich butter sauce and breadcrumbs.

plural of oyster Rockefeller

A cocktail made of oysters, hot sauce, vodka and a variety of other ingredients.

plural of prairie oyster

A drink consisting of a raw egg with yolk intact, Worcestershire sauce, hot sauce, salt, and ground black pepper. / A Rocky Mountain oyster; a bull calf testicle prepared as food.

A dish of oysters with bacon and Worcestershire sauce.

plural of scalloped oyster

(cooking) An opened oyster baked in a deep dish with alternate layers of bread or cracker crumbs, seasoned with pepper, nutmeg, and butter.