ADV [n ADVERB, ADVERB after verb](指代有钱人家的仆人)楼下地 People sometimes use below stairs to refer to the servants in a rich household and the things that are connected with them. (指代有钱人家的仆人)楼下地
...a glimpse of life below stairs at Buckingham Palace.
白金汉宫下人生活一瞥
Below-stairs is also an adjective.
...the below-stairs world of a 1920s country house.