Hang Out Meaning

(dated, informal) To be unyielding; to hold out.

Example:   After this is over, do you want to go hang out?
  He hung out with his friends all day yesterday.
Charles Dickens, The Pickwick Papers
  'I say, old boy, where do you hang out?'
Mr. Pickwick replied that he was at present suspended at the George and Vulture.
2012 August 21, Pilkington, Ed, “Death penalty on trial: should Reggie Clemons live or die?”[1], The Guardian:
  The sisters, and their cousin Thomas Cummins, had gone onto the bridge that night to see a poem Julie Kerry had painted on it, and as they did so they bumped into Clemons and three other young men who were hanging out there.
  The juryman hangs out against an agreement.