jink
Stab someone without preamble or provocation--a form of thuggery rather than something that happens in a "knife fight." Most often an assassination in prison.
"Don was walking through an alley and a crackhead hiding in a doorway jinked him with a screwdriver."

"Seth was walking back to his cell and two guys ran around a corner and jinked him up--ran the gears on him. He owed their boss money and couldn't pay."