Green’s Dictionary of Slang

baksheesh adv.

also backsheesh
[baksheesh n. (3)]

(Aus.) for free.

[Aus]Kia Ora Coo-ee 15 June 3/2: He promised me that I’d get the best kind of artificial foot backsheesh, and that I’d never regret the lost original. I can tell you, I went dead crook about it at first, but he looked so disappointed that I hadn’t the heart to refuse.