turn king's/queen's evidence(redirected from turned King's evidence)
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Related to turned King's evidence: Queen's evidence
turn king's/queen's evidence
To provide evidence in court implicating other parties involved in the crime for which one has been charged, in order to receive a reduced sentence or to avoid prosecution altogether. Primarily heard in UK. We're leaning on him pretty hard, so we think he'll turn king's evidence and finger his accomplices.