What is a pizza bone?

"Pizza bone" is not a standard term in pizza terminology. It's likely a slang term used to describe something related to pizza, but without more context, it's impossible to say for sure what it means.

Here are some possibilities:

* The crust: It's possible someone is jokingly referring to the crust as a "pizza bone" because it's the "skeleton" of the pizza.

* A burnt or overcooked part of the crust: Some people might call a very crispy or charred part of the crust a "pizza bone" due to its hardened texture.

* A specific type of pizza: There might be a regional pizza style or a specific pizza topping that is referred to as a "pizza bone" in some areas.

To understand the meaning, you would need more information about the context in which the phrase was used.

Can you provide more information about the situation where you heard "pizza bone"?