Noun | 1. | shiitake - edible east Asian mushroom having a golden or dark brown to blackish cap and an inedible stipe Chinese black mushroom, golden oak mushroom, Lentinus edodes, Oriental black mushroom, shiitake mushroom fungus - an organism of the kingdom Fungi lacking chlorophyll and feeding on organic matter; ranging from unicellular or multicellular organisms to spore-bearing syncytia genus Lentinus, Lentinus - a genus of fungus belonging to the family Tricholomataceae |