膛线 tángxiàn rifling Definitions Defs Origin Strokes Stroke Words Sentences Sents 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线 線 xiàn noun thread thread; string; wire; something long and thin like a thread; (bound form) made of cotton thread