Senses
校 school
(bound form) school; college; educational institution
校 field officer
(bound form) a middle-ranking military officer, such as a major or colonel
校 to proofread
to check; to compare critically and correct errors; to collate
校 to compete
to compare; to contest; to measure (strength, etc.)
校 surname
a Chinese surname
校 shackles
(archaic) a cangue; wooden stocks or instruments of punishment
校 drill ground
(archaic) an open space for military drills or competitions