東床

Etymology
From a tale in the  about the renowned calligrapher :


 * When ―the Grand Tutor to the Crown Prince in the ―wanted to select a son-in-law from the Wang family, all the eligible young men in the Wang family were trying to impress the envoy sent by the Grand Tutor when he came. The only exception was, who was lying nonchalantly on his bed, eating something with his belly exposed.


 * The Grand Tutor was informed of what the envoy had observed, that all the young men of the Wang family were fine-looking, albeit reserved, excepting a young man who lay on a bed in the east with a bare abdomen. The Grand Tutor remarked: “That is the one I want as my son-in-law!” He visited the Wang family himself, realised the young man was Wang Xizhi, and gave his daughter to him in marriage.

Noun

 * 1)  son-in-law
 * 2)  guest bed
 * 1)  guest bed
 * 1)  guest bed