turn King's evidenceBritish EnglishBrESC to give information about other criminals in order to get a less severe punishment 〔罪犯为减刑而〕提供对同案犯不利的证据,〔罪犯〕作为污点证人指控同党 → Queen’s evidence SYN American English state’s evidence → turn King’s evidence at king's evidence(1)