NORRISTOWN, United States: The deadlocked US jury battling to reach a verdict in Bill Cosby’s sexual assault trial asked the judge Friday to define “reasonable doubt” and again asked to hear from the fallen star’s testimony. The 79-year-old pioneering black actor could face spending the rest of his life in prison if convicted on three counts of aggravated indecent assault against 44-year-old Andrea Constand at his Philadelphia mansion in January 2004. The 12-member jury had told Judge Steven O’Neill on Thursday that they were deadlocked, but the Pennsylvania judge ordered them to continue with no cut-off point to stop trying to reach a unanimous agreement. The panel suspended its deliberations late Friday. They have now been deliberating more than 52 hours on whether or not Cosby should be convicted of drugging and molesting Constand. Under US law, any application of the term “reasonable doubt” would mean that the jury should acquit the defendant.