Dictionary/岩屋いわやIwayaOther forms: 石屋、窟岩屋 (Iwaya) is a Japanese noun meaning “cavern, grotto”.Meaningsnouncavern; grottoKanji in 岩屋岩boulder屋roofRelated words部屋room流石as one would expect岩rock石stone石koku屋敷residence屋根roof屋上rooftop大家landlord理屈theory長屋tenement house屋台cart (esp. a food cart)