桢干 (楨幹) zhēngān

1. zhēngān noun poles and planks of wood used for raising building walls
   Domain: Literary Chinese 文言文
   Notes: (Guoyu '楨幹' 1; Mathews 1931 '楨幹', p. 42)
2. zhēngān noun a primary support
   Domain: Literary Chinese 文言文
   Notes: In the sense of 支柱 (Guoyu '楨幹' 2, 3; Mathews 1931 '楨幹', p. 42)
3. zhēngān verb to support; to protect
   Domain: Literary Chinese 文言文
   Notes: In the sense of 拱卫 or 支持 (Guoyu '楨幹' 4)