保甲

bǎojiǎ
historical communal administrative and self-defence system created during the Song Dynasty and revived during the Republican Era, in which households are grouped in jia 甲 jiǎ and jia are grouped in bao 保 bǎo

CEDICT

Entry Composition

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