eater

noun3

1. •
   A person or animal who eats.

   • "He is the right sort of man for a labourer, but he is a terrible eater, to be sure," thought the farmer. — 1886
2. •
   A fruit or other food that is suitable for eating, especially one that is intended to be eaten uncooked.

   • The bass is a fine eater. — 1911
3. •
   A configuration of cells that appears to consume another configuration by gradually causing it to disappear.

   • The eater can also destroy a snail, but changes its phase while doing so. — 1997