What's a moonuwal?

Hannah has been going through a phase (at least I hope it's a phase) of making up words. She has a huge vocabulary (of real words) and she is old enough to know how to speak clearly and audibly so we know she is speaking serious nonsense. Instead of asking what to call something, she creates a phonetic conglomeration, as I like to call it, and that's what it is. She's so confident about it, it makes me wonder if she knows something I don't.
Pointing to a wire whisk,
"That's a what, Hannah?"
"A moonuwal. That's what it is."