'Jǐng gài' literally means 'well cover'—'jǐng' (well) originally referred to water wells in ancient China, and 'gài' means 'cover' or 'lid'. Over time, the term broadened to refer to the heavy metal or concrete covers placed over underground utility access points, such as sewers, electrical conduits, or telecommunications lines. Though no longer used for actual wells in modern cities, the name persists due to the similar circular, lid-like function and historical shape.

You’ll commonly see 'jǐng gài' in urban infrastructure contexts—on sidewalks, roads, and construction sites. It’s a neutral, technical term used in daily conversation, news reports about public safety, and municipal maintenance notices. Because manhole covers are often stolen or displaced, the word sometimes appears in discussions about city management, road safety, or even crime prevention.