Green’s Dictionary of Slang

leventy-leven adj.

(US black) a large, unspecified number.

H. Burchard ‘High-Rollin’ on the River’ Wash. Post 14 Dec. 🌐 Let it be noted in passing that there are two banks in Tunica, two haberdashers, two drugstores, leventy-leven churches, nine liquor stores and nowhere near enough places to live and shop.