Definitions

1. adjective

having a somewhat plump or rounded body shape

“She was a happy, chubby toddler.”

2. noun

a small, rounded piece of something (especially a chunk of fat)

“The chef carefully trimmed the chubby from the roast chicken.”

3. verb

to make someone or something fat or plump

“The rich food will chubby him up if he eats too much.”