It's a Hindi word I believeor one of the fifty million other Indian dialects. It's used in England to refer to a kind of chocolatey-biscuity-cakey thing (and it's absolutely smashing) but in Mumbai/Bombay/whatever they're calling it these days restaurants do 'tiffin boxes', which are metal tins with curry and rice that are delivered to workplaces at lunch time. Sort of the Indian equivalent of the sandwich run. I think the word literally just means 'lunch' or something similar.
EDIT: Oh it's actually an English word after all. en.wikipedia.org/wiki/Tiffin
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Mon 12 Oct 2009, 17:43,
archived)
EDIT: Oh it's actually an English word after all. en.wikipedia.org/wiki/Tiffin