chubster       
noun [ C ]  informal humorous uk/ˈtʃʌb.stər/ /ˈtʃʌb.stɚ/
 微胖的人,胖子
a person who is a little fat
  We can't work out what women see in this pony-tailed chubster. 我们搞不清楚女人们为什么会看上这个扎着马尾辫的胖子。 
 - More examples
 - At eight stone, an actress is considered a chubster.
 - I still love food, I'm still a chubster at heart.
 - He once represented his country at water polo, though these days he's something of a chubster.
 - I'm a self-proclaimed, french-fry-loving chubster.