发妻fàqī指第一次娶的妻子(古诗‘结发为夫妻’,结发指初成年)。{first wife; woman who was married to a man when both had just come of age and, usu. who remains as his wife into old age. The term is derived from the line in a poem by the Western-Han poet Su Wu (?-60B.C.): ‘United in wedlock when we were both young, we remain husband and wife to this day.’}