Definition of "bunnia"

I dare not tell, do anything, or get anything done, because I am in debt to Bhangwan Dass the bunnia for two gold rings and a heavy anklet.

1888, Rudyard Kipling, “In the House of Suddhoo”, in Plain Tales from the Hills, Folio, published 2005, page 103

Of what the Englishman's business would consist, the Raja made no enquiry: he was a zemindar after all, not a bania in a bazar, sitting cross-legged on a countertop.

2008, Amitav Ghosh, Sea of Poppies, Penguin, published 2015, page 84