钢圈 Traditional form: 鋼圈 Pinyin (reading): gāngquān Definitions: wheel rim underwire (in a bra) Characters: 钢 - steel; hard, strong, tough 圈 - circle, ring, loop; to encircle Traditional characters: 鋼 - steel; hard, strong, tough 圈 - circle, ring, loop; to encircle