oyster mushroom(n = noun.plant) oyster agaric, oyster fungus, pleurotus ostreatus - edible agaric with a soft greyish cap growing in shelving masses on dead wood;
is a kind of agaric
is a member of genus pleurotus, pleurotus

blushing mushroom, brain mushroom, chinese black mushroom, chinese mushroom, deer mushroom, fairy-ring mushroom, field mushroom, fischer's slime mushroom, golden oak mushroom, green mushroom pimple, honey mushroom, horse mushroom, inky-cap mushroom, japanese oyster, magic mushroom, meadow mushroom, miter mushroom, mushroom, mushroom anchor, mushroom cloud, mushroom coral, mushroom pimple, mushroom poisoning, mushroom sauce, mushroom wine sauce, orange mushroom pimple, oriental black mushroom, oyster, oyster agaric, oyster bank, oyster bar, oyster bed, oyster catcher, oyster crab, oyster cracker, oyster dressing, oyster fish, oyster fungus, oyster park, oyster plant, oyster shell, oyster stew, oyster stuffing, parasol mushroom, pearl oyster, pore mushroom, roof mushroom, sacred mushroom, saddle oyster, sandy mushroom, seed oyster, shaggymane mushroom, shiitake mushroom, slime mushroom, snow mushroom, spanish oyster plant, sponge mushroom, straw mushroom, stuffed mushroom, swadust mushroom, vegetable oyster, virginia oyster, viscid mushroom, white slime mushroom, window oyster, windowpane oyster, winter mushroom