Nantoka/隧洞suì dòng隧洞 (suì dòng) is a Chinese word meaning “tunnel”.Meanings1tunnelCharacters in 隧洞隧suì · tunnel洞dòng · caveRelated words洞cave洞used in 洪洞[Hong2 tong2] (the name of a place in Shanxi)隧道tunnel洞穴cave漏洞leak黑洞(astronomy) black hole山洞cavern空洞cavity洞察力insight防空洞air raid shelter; bomb shelter洞口cave mouth洞口see 洞口縣|洞口县[Dong4 kou3 Xian4]Study Chinese with flashcards →