noun · an honorific for a high-ranking official, a lord, or a young gentleman

敢问这位相公尊姓大名？

noun · an archaic honorific address used by a wife for her husband

相公，该吃药了。

proper name, noun · a male prostitute or catamite (archaic)

旧时代有些富家子弟喜欢出入这种场所，寻找年轻貌美的相公。

noun · a mahjong player disqualified for holding an incorrect number of tiles

他的牌数多了一张，这把成大相公了。