媒人 (méi rén) literally combines 媒 (méi), meaning 'intermediary' or 'go-between', and 人 (rén), meaning 'person'. Together, it refers to a traditional matchmaker — someone who introduces unmarried people to each other with the aim of arranging marriage. Historically,媒人 played a vital role in Chinese society, especially in arranged marriages, acting as a trusted liaison between families to assess compatibility, negotiate dowries, and ensure proper etiquette.

Though less common today due to changing social norms, the term is still used respectfully in both formal and literary contexts — for example, when describing family-arranged marriages, historical dramas, or humorous references to friends who enthusiastically set others up. It carries connotations of wisdom, social skill, and responsibility, and is rarely used ironically without clear contextual cues.