（术语）金刚牙菩萨之种子&DF-87A4字也。&DF-87A4字有他恐怖之义。牙亦具食啖他而恐怖之义。故名&DF-87A4字为牙字。瑜只经曰：‘金刚怖食啖牙字发光明。’