Queen's evidence noun
Meaning:
turn Queen's evidence
Brit, law ◊If you are charged with a crime and you turn Queen's evidence (or turn King's evidence), you agree to give information (such as the names of other criminals) to the court in order to reduce your own punishment.
▪ One of the gang members turned Queen's evidence [=(US) turned state's evidence] and testified against the other members.
▪ One of the gang members turned Queen's evidence [=(US) turned state's evidence] and testified against the other members.
