Street
c.o.
What does c.o. mean?
The standard term inmates and staff use for a uniformed prison guard.
"The C.O. did a cell check right after count."
Origin
Acronym for 'correctional officer.'
Frequently asked questions
What does C.O. stand for?
C.O. stands for 'correctional officer,' the standard term inmates and staff use for a uniformed prison guard.
Is C.O. slang or an official term?
It is more of a standard shorthand than pure slang; it is used by both staff and inmates and is the common everyday word for a prison guard.
How is C.O. used in a sentence?
Like any job title, as in 'The C.O. did a cell check right after count,' referring to the guard on duty.
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