大校

senior ranking officer in Chinese army / senior colonel

see 大夫[dai4 fu5]

big; large; great / older (than another person) / eldest (as in 大姐[da4 jie3]) / greatly; freely; fully / (dialect) father / (dialect) uncle (father's brother)

to proofread / to check / to compare

school / military officer / CL:所[suo3]

to check; to collate; to proofread

commodore (= US Navy equivalent)