Green’s Dictionary of Slang

1. the world outside prison.

1971–2		C. Shafer ‘Catheads [...] and Cho-Cho Sticks’ in Abernethy Bounty of Texas (1990) 204: free world, n. – someplace other than prison.
1974		B. Jackson Get Your Ass in the Water 7: Voodoo was out in the free world, wearing women’s dresses, high-heeled shoes, lipstick, and all that.
1992		Bentley & Corbett Prison Sl. 107: Free World also Free Side Anything outside the confines of an institution.
2000		Other Side of the Wall: Prisoner’s Dict. July 🌐 Free World: The outside.

2. (also world) a tailormade cigarette [as opposed to the hand-rolled ones mostly found inside prisons].

1971–2		C. Shafer ‘Catheads [...] and Cho-Cho Sticks’ in Abernethy Bounty of Texas (1990) 217: worlds, n. – ready-rolled cigarettes.
2000		Other Side of the Wall: Prisoner’s Dict. July 🌐 Free World: [...] Also mass made cigarettes – as opposed to hand-rolled.