Queen's evidence noun
Learner's definition of QUEEN'S EVIDENCE
turn Queen's evidence
British, 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.刑事被告向法庭提供的对同案犯不利的证据(以减轻对自身的处罚)