noun

a place where fat children go to try to become thinner and healthier, especially during the summer holidays

to make a person or animal fatter

if someone fills out, their body becomes less thin

verb

to become thinner and weigh less

if someone piles on weight, or if it piles on, their weight increases suddenly and by a large amount

to become fatter

if you put on weight, you become fatter

to lose weight

if weight that you have lost from your body stays off, you do not become heavier again

to get rid of body weight by making yourself sweat

to become thinner by losing weight

to gradually become thinner and weaker over a period of time, usually because of an illness

if you work off something such as a feeling or some of your weight, you get rid of it by doing something that involves a lot of physical activity

to begin to get fat because you are doing less exercise