(source: Iceberg Slim-Pimp, the story of my life)

Section of the novel that contains the expression:

”Miss Peaches had died of old age. His eyes were sad when he told me about it. Glass Top was still out West in Seattle. Patch Eye did a little bookie business for him. Sweet had lost his glory. He looked a hundred years old. His backbone was the old white broad who owned the building.”

Background:

Slim meets his old friend, Sweet Jones after they have not seen each other for a long time. Sweet tells him what happened meanwhile with their common friends. Sweet’s cat (Miss Peaches) died, Top Glass (a pimp pal of them) moved to Seattle, he was down and Patch Eye (an old hustler) involved him to some ’bookie business’... (this is out of question some shady deal)

But what kind of business this exactly refers to?