Eater is a hard science fiction novel written by UC- Irvine physics professor Gregory Benford. It was published in May 2000 by Eos. Heavy on the physics information, Eater describes mankind's encounter with a cosmic intelligence that comes in the form of a small black hole.

someone who consumes food for nourishment

any green goods that are good to eat; "these apples are good eaters"

One who, or that which, eats.