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Definitions

C.O.

NOUN
conscientious objector
Synonyms


co
NOUN
carbon monoxide
Synonyms


NOUN
commanding officer
Synonyms






Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Instead, it was “so many people screaming, screaming to talk to each other. Screaming for assistance: ‘Yo, C.O., my toilet flooded.

From Slate • May 19, 2025

“A C.O. had told me that I was never going home and that really got to me,” he said of one occasion.

From New York Times • Dec. 17, 2021

An older, more-seasoned lifeboat pilot, future station C.O.

From Seattle Times • Aug. 18, 2019

Over time, draft boards came to resemble freshman philosophy seminars in their attempts to decide who did and did not qualify for C.O. status.

From The New Yorker • Oct. 22, 2018

And she rang her C.O. to let him know she had been asked to taxi one of her usual passengers from RAF Special Duties to an “Undisclosed Location.”

From "Code Name Verity" by Elizabeth Wein




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