C.O.
Meaning of C.O. in English
transcription, транскрипция: [ si: oʊ ]
( C.O.s)
A soldier’s C.O. is his or her commanding officer .
N-COUNT
Collins COBUILD Advanced Learner's English Dictionary.
Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне.
2006