noun
big eater; glutton
Describes a person who eats a lot; slightly literary or emphatic compared to 大食い.
彼は大食漢で、一人でピザを三枚平らげた。
He's a big eater and polished off three pizzas by himself.
More common and casual term for a big eater or eating contest; 大食漢 is more literary and emphasizes the person's character.
Compound of 大食 (たいしょく, 'eating a lot') + 漢 (かん, 'man'), literally 'big-eating man'.