Of a person, slightly overweight, somewhat fat, and hence soft, plump, and rounded.
“Obviously the chubby child was eating too much.”
Of a body part, containing a moderate amount of fat.
“It’s quite normal for babies to have chubby cheeks.”
A chubby, plump person
An overweight or obese gay man.
A penile erection, especially when short and with a large circumference; a boner.
“Hey, Lucius, I just wanted to share a piece of personal information with you. I’ve got a… a chubby right now because [starts screaming] This is one of the most awesome experiences of my life!—Talladega Nights: The Ballad of Ricky Bobby”
“I ate a chunky bar of chocolate.”
“I prefer chunky blonde girls to skinny brunettes.”
Of a cat: having a large, solid bodyline.
“The British Shorthair has a distinctively chunky body, dense coat and broad face.”
Native American game.