Injun bank roll
n.— «The dollars he pulled out of his pocket never seemed to diminish what he called his “Injun bank roll,” with its few big bills on the top bolstered by many smaller ones beneath.» —“Injun Joe Thompson” by Kevin Kinsella Languor Management Apr. 26, 2006. (source: Double-Tongued Dictionary)
Further reading
A librarian opens a book and finds a mysterious invitation scribbled on the back of a business card. Another discovers a child’s letter to the Tooth Fairy, tucked into a book decades ago. What stories are left untold by these forgotten...
The art of the invitation can be tricky. An inviter’s idea of invitation may be taken by an invitee as merely mentioning an event while they’re nearby. One such a misunderstanding went on for months! Plus, George Saunders, winner of the...
Known in Boston as a “Chicago bankroll”
cf http://www.dictionaryofgambling.com/gambling_terms/poker/c/
Also known as a Michigan roll, a Missouri roll, and a knot.