What is the thing called that you hit meat with?

You're likely thinking of a meat tenderizer.

Here are some other possible tools that might be used with meat:

* Meat mallet: Similar to a tenderizer, but often has a flat, smooth head for pounding and flattening meat.

* Hammer: While not ideal, a hammer can be used in a pinch to tenderize meat.

* Rolling pin: Can be used to flatten meat, but not for tenderizing.

Let me know if you had something else in mind!