旧时户籍编制unit of measurement used in ancient Chinese civil administration equal to ten households

天干第一位the first of the ten Heavenly Stems

第一first

• 合同甲方

  contractual party A

• 桂林山水甲天下。

  Guilin's scenery is the finest in the world.

参见：甲壳[jiǎqiào]

指甲nail

铠甲armour(Britain); armor(US)