glutton; big eater
A somewhat literary or formal term for a person who eats a lot; less common in casual speech than 大食い or 食いしん坊.
He is a big eater and can polish off five servings of ramen in one sitting.
Compound of 健啖 (kentan, 'hearty eating') + 家 (ka, 'person'). The exact historical derivation is uncertain, but the spelling is conventionally associated with the meaning.