甲

"A" (in a sequence of examples involving "A", "B", "C", etc.)
1st heavenly stem
1st in order
armor

家用, 家用电脑, 加油, 加?於, 家园, 家长, 家政, 加值型网路, 加重, 加州, 夹子, 家族, 铗, 蛱, 袷, 郏, 恝, 颊, 荚, 戛, 甲板, 甲虫, 假定, 假发, 假如, 假设语气, 假使, 假象牙, 假装, 架, 假, 嫁, 价, 稼, 驾, 驾车, 价格, 架构, 价款, 价目,