膛線 Save Sign in to save words Simplified: 膛线 tángxiàn ㄊㄤˊ ㄒㄧㄢˋ rifling (helical grooves inside the barrel of a gun) Character by character 膛(táng)hollow space 線(xiàn)thread Other words read tángxiàn In the same tone 唐縣 Often confused with tangxian 探險 A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0