turn queen's evidence
English
Verb
turn queen's evidence (third-person singular simple present turns queen's evidence, present participle turning queen's evidence, simple past and past participle turned queen's evidence)
- (Britain, law) Of a person accused of a crime, to give evidence against one's accomplices in the hope of receiving a lighter punishment. Used when the British monarch is female; see also turn king's evidence.
See also
- turn state's evidence