婆娘 (pó niáng) is a colloquial, regionally marked term for 'wife', commonly heard in northern and western Chinese dialects—especially in rural or informal speech. Though composed of 婆 (pó), which often means 'mother-in-law' or 'old woman', and 娘 (niáng), meaning 'mother' or 'young woman', the compound does not literally mean 'mother-in-law + mother'. Instead, it functions as a fixed, affectionate or familiar slang term for one’s spouse—similar to English expressions like 'my old lady' or 'the missus'. It carries mild rustic or earthy connotations and is rarely used in formal writing or polite conversation.

The word reflects traditional kinship language repurposed through vernacular usage: 婆 can denote a married woman in older contexts, while 娘 adds warmth or familiarity. It’s typically used by men referring to their own wives, often with teasing, fond, or matter-of-fact tone—but never toward someone else’s wife, as that would be impolite. Its register sits firmly in spoken, informal domains: family chats, local storytelling, or regional literature depicting everyday life.