Both Uses

glutton
in
The Odyssey, by Homer (translated by: Butcher & Lang)
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Say, whither art thou leading this glutton,—thou wretched swineherd,—this plaguy beggar, a kill-joy of the feast?†
Book 17 *

glutton = someone who consumes more than they should -- especially eating and drinking too much; or someone who persists in an activity even though it has negative consequences; or someone who loves a thing mentioned
Then the beggar Irus spake unto him in anger: 'Lo now, how trippingly and like an old cinder-wife this glutton speaks, on whom I will work my evil will, and smite him right and left, and drive all the teeth from his jaws to the ground, like the tusks of a swine that spoils the corn.†
Book 18

Definitions:

(1) (glutton)
someone who consumes more than they should -- especially eating and drinking too much

The expression: "a glutton for punishment" usually refers to someone who persists in some activity despite negative consequences, but it can also be used to stress that someone loves something as in "a glutton for sunshine".
(2) (meaning too rare to warrant focus)
Gluttony is an instance or a habit of eating or drinking like a glutton.

Much more rarely, glutton can reference a kind of wolverine in northern Eurasia.