state's evidence

American  

noun

1. evidence given by an accomplice in a crime who becomes a voluntary witness against the other defendants.

   The defendants' case was lost when one of them turned state's evidence.

2. evidence for the state, especially in criminal trials.

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state's evidence British  

noun

1. the evidence for the prosecution given on behalf of a state in a criminal prosecution

2. Brit equivalent: king's evidence.   queen's evidence.  evidence given for the state by an accomplice against his former associates in crime (esp in the phrase turn state's evidence )

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Etymology

Origin of state's evidence

First recorded in 1790–1800

Example Sentences

They could, however, provide his defence with a glimpse into the state's evidence against him.

From BBC

The state's evidence will get stronger with each passing plea as more and more insiders share information with the state and admit wrongdoing.

From Salon

Michael Null’s attorney, Tom Siver, said he was so unimpressed with the state’s evidence that he did not cross-examine witnesses during 14 days of testimony.

From Seattle Times

Holding several lengthy trials instead would “create an enormous strain on the judicial resources” of the county superior court and would randomly favor the defendants tried later, who would have the advantage of seeing the state’s evidence and arguments ahead of time, prosecutors wrote.

From Seattle Times

Denying the charge without knowing the state’s evidence for it puts Meadows in a precarious position if Willis has the goods.

From Los Angeles Times