Dwarvish word for dragon

I know this website is mostly for elvish, but I am hoping someone knows something about Tolkien's dwarvish. What would a good word for dragon be?

We don't know, referencing the currently published material.

Indeed. There is a website which could give you an idea of what it might have been. It's called The Dwarrow Scholar and has a lot of material on Khuzdul (albeit non-canon).

Yes, but important to underscore that's a neo-Khuzdul project. The word and underlying root for Dwarrow Scholar's "dragon" don't come from Tolkien, if that's what OP is after.