a small room used as a hot-air or steam bath for cleaning and refreshing the body 桑拿浴室 ■a session in such a room 桑拿浴,蒸汽浴 ■used in comparisons to refer to a very hot, humid place 潮湿闷热的地方 the restaurant is like a sauna despite open windows. 尽管开了窗子,餐馆还是热得像个桑拿浴室。