‘吻痕’ literally means ‘kiss mark’ — combining 吻 (wěn), meaning ‘to kiss’, and 痕 (hén), meaning ‘mark’ or ‘trace’. It refers to the temporary red or purple mark left on the skin after intense suction during kissing, commonly known in English as a ‘love bite’ or ‘hickey’. Unlike medical bruises, 吻痕 is socially associated with romantic or intimate physical contact, often carrying connotations of passion, secrecy, or youthful affection.

This word is neutral in tone but context-dependent: it may sound playful in casual conversation among friends, slightly suggestive in dating contexts, or even awkward if visible in formal settings. It appears frequently in modern Chinese novels, TV dramas, and social media discussions about relationships. While the characters individually are common, the compound 吻痕 is a fixed noun and does not function as a verb or adjective — you cannot say ‘他吻痕她’ (incorrect); instead, you’d say ‘他在她脖子上留下了吻痕’.