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1.
interj. A combination of buh and what. It is used to convey complete and utter confusion, most commonly said when the speaker simply cannot think of anything else to say whatsoever. It is interchangable with bah, buh, and wha, along with many others.

It is pronounced as what, but with a b at the beginning.
Amy: My dad painted the driveway purple.
Kelly: ...Bhat?

Jessica: My cat had puppies!!
Cate: ...Bhat?
by itsamutiny November 28, 2006
 
2.
Bhat is something very spicy used for many things. It is usually used little by little
either you know the BHAT or you dont.
VAT IS IN THIS ROTI YAAR?

LITTLE BITTA BHAT.

WHAT?

BHAT
by BHATMAN February 25, 2010