线膛 xiàntáng rifled barrel Origin Definitions Defs Strokes Stroke Words Sentences Sents 线 線 xiàn noun line (geometry) (geometry) the figure formed by a moving point膛 táng hollow space (bound form) an inside cavity or hollow part of an object, such as the chamber of a gun or the firebox of a stove; often appears in 枪膛 qiāngtáng or 炉膛 lútáng