药 yào, [葯]/[藥], leaf of the iris/variant of 藥|药[yào], medicine/drug/substance used for a specifi... 约 yāo/yuē, [約], to weigh in a balance or on a scale, to make an appointment/to invite/approximat... 哟 yō/yo, [喲], Oh! (interjection indicating slight surprise), (sentence-final particle expressi...