1first of the ten Heavenly Stems 十天干
2(used for an unspecified person or thing)
3first (in a list, as a party to a contract etc)
4letter "A" or roman "I" in list "A, B, C", or "I, II, III" etc
5armor plating
6shell or carapace
7(of the fingers or toes) nail
8bladed leather or metal armor (old)
9ranking system used in the Imperial examinations (old)
10civil administration unit in the baojia 保甲 system (old)
11ancient Chinese compass point: 75°