Chewer (noun)

A person or thing that chews.

Origin:

Late 16th century, from chew (verb).

Examples:

1. The cow is a notorious grass chewer.
2. He was a heavy chewer of gum.
3. The chewer was very efficient and made quick work of the tough beef.
4. The chewer was designed to break down food in the mouth.
5. The chewer was the first step in the digestive process.