a period of time in which you sit or lie in a room (also called a sauna) which has been heated to a very high temperature. Some saunas involve the use of steam. 桑拿浴；蒸汽浴 a hotel with a swimming pool and sauna 带游泳池和桑拿浴室的旅馆 to have/take a sauna 洗桑拿浴
Word Originlate 19th cent.: from Finnish.