noun, abbreviation · an educational institution such as a school or college

他在校期间经常参加各种社团活动。

verb · to check; to collate; to proofread

编辑正在办公室校这本书的样稿。

noun · a military rank of field grade, such as a major, lieutenant colonel, or colonel

他在从军十年后被晋升为中校。