浴室 (yù shì) literally means 'bath room' — combining 浴 (yù), meaning 'to bathe' or 'bath', and 室 (shì), meaning 'room' or 'chamber'. It refers specifically to a room equipped for bathing, typically containing a bathtub, shower, sink, and sometimes a toilet. Unlike the more general term 卫生间 (wèishēngjiān), which emphasizes hygiene and often includes toilets, 浴室 focuses on washing functions and is commonly used in homes, hotels, or gyms where bathing facilities are central.

This word is neutral in register and widely understood across Mandarin-speaking regions. It appears frequently in real estate listings, hotel descriptions, and daily conversation when discussing home layouts or personal routines. While some households use 浴室 and 卫生间 interchangeably, native speakers tend to reserve 浴室 for spaces primarily intended for bathing — for example, a separate shower room in a large apartment or a spa facility — rather than a combined toilet-and-shower space.