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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

“Bud” Adams Jr.; television executive and producer Roone Arledge; longtime Oilers/Titans scout C.O.

From Seattle Times • Jul. 7, 2022

Ian Ginsberg stood in his West Village office above C.O.

From New York Times • Feb. 1, 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

There were a lot of people involved because they had to keep swapping over guards, and my C.O. refused to tell me who it had been, to protect them, you know?

From "Code Name Verity" by Elizabeth Wein




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