sweat out of

sweat something out of someone

 and sweat something out 
1. Lit. to apply enough heat to cause someone to sweat, with the goal of removing bodily poisons or the cause of a disease. They used the ancient treatment of sweating the disease out of me. It worked! They used steam to sweat out the flu.
2. Fig. to force someone to reveal information under pressure. The cops couldn't sweat the information out of Max. They couldn't sweat out the information.
See also: of, out, sweat