eater:
(plural: ‘eaters‘; the opposite word in meaning, in some contexts, ‘feeder’; for the right pronunciation, please click here)
a person who eats some food item in a stated way,

some decent eaters
e.g.
Gerald is such a heavy eater that he can eat a horse!
Though a man-eater is any meat-eating animal that kills and eats people instead of its usual animal prey, it has been found out that there are people who eat the flesh of dead bodies!!
Doctors warn red meat eaters to avoid eating lot of meat and fat which may increase health risks which include cancer.
Eaters at any eatery must check to see that they are given fresh and genuine meats they display in the eatery menus.
For an article with this word that shows us how we encounter this word in our daily readings, please click here and for an item of news that warns bacon/pork eaters of health risks, please click here. For an article about the difference between meat eaters and plant eaters, please click here.
‘Eater’ is also used to refer to a person who does sex by mouth, but not in the natural way; however, it should be noted that this usage is not to be used in any formal conversation or speech.
