glut ‧ ton /ˈɡlʌtn/ BrE AmE noun [countable]
[ Date: 1200-1300 ; Language: Old French ; Origin: gloton , from Latin glutto , from gluttire 'to swallow' ]
1 . someone who eats too much
2 . a glutton for punishment someone who seems to enjoy working hard or doing something unpleasant
—gluttonous adjective