(n.) One who, or that which, eats.

Brillat-Savarin Lucullus board-and-roomer bon vivant cannibal carnivore connoisseur of food consumer diner diner-out eater eater-out epicure feeder flesh-eater fruitarian gastronome glutton gourmand gourmet grain-eater graminivore granivore herbivore high liver hungry mouth lactovegetarian lessee lodger luncher man-eater meat-eater mouth omnivore omophagist pantophagist paying guest phytophage picnicker plant-eater predacean renter roomer tenant transient transient guest trencherman underlessee vegetarian