铁瓮城 tiěwèngchéng Tieweng City Origin Definitions Defs Strokes Stroke Words Sentences Sents 铁 鐵 tiě adjective firm firm; solid; hard; strong-willed瓮城 甕城 wèngchéng Tieweng City (literary) Another name for Tieweng City, an inner fortress in Zhenjiang, Jiangsu Province, built by Sun Quan during the Three Kingdoms period.