壁炉 (bì lú) literally means 'wall stove' — 壁 (bì) means 'wall', and 炉 (lú) means 'stove' or 'furnace'. It refers to a built-in heating structure, typically made of brick or stone, set into an interior wall and used for burning wood or gas to provide warmth and ambiance. Unlike portable heaters, a 壁炉 is architectural — often found in living rooms of homes in colder regions, especially in Western-style or renovated Chinese apartments.

In modern Chinese usage, 壁炉 carries connotations of comfort, tradition, and cozy domestic life — frequently appearing in home décor magazines, real estate listings, and lifestyle descriptions. Though not traditional in most historic Chinese architecture, it’s increasingly common in upscale urban residences and vacation homes. The term is neutral in register and used equally in spoken and written contexts, but it implies a relatively affluent or Western-influenced living environment.