Green’s Dictionary of Slang

polly n.⁵

money.

1972		B. Rodgers Queens’ Vernacular 137: Money in general: [...] polly (because money talks).
2001		Dallas Observer 15 Feb. 🌐 Milkbar is so hot the couple, who also own Sambuca, plan to throw wads of pretty polly at it just in time for Milkbar’s first anniversary celebration.