A carnivorous mammal (Gulo gulo), of the family Mustelidæ, about the size of a large badger. It was formerly believed to be inordinately voracious, whence the name; the wolverine. It is a native of the northern parts of America, Europe, and Asia
{i} overeater, one who eats and drinks to excess; one who has an insatiable appetite (for work, money, etc.)
If you say that someone is a glutton for something, you mean that they enjoy or need it very much. He was a glutton for hard work Ivy must be a glutton for punishment
disapproval If you think that someone eats too much and is greedy, you can say they are a glutton. I can't control my eating. It's hard when people don't understand and call you a glutton