牙行 Traditional form: 牙行 Pinyin (reading): yáháng Definitions: middleman (in former times) broker Characters: 牙 - tooth, molar; fang, tusk; serrated 行 - to go, to walk, to move; professional Traditional characters: 牙 - tooth, molar; fang, tusk; serrated 行 - to go, to walk, to move; professional