- The definition of chubby is someone plump, rounded or slightly overweight.
When you have a toddler who is round and plump, this is an example of someone who would be described as chubby.
A chubby cat.
- Informal A chubby person.
- Vulgar Slang An erection of the penis.
Origin of chubbyProbably from chub (from the plumpness of the fish).
(comparative chubbier, superlative chubbiest)
- A chubby, plump person
- (slang) Especially a gay man.
- (slang) An erection of the penis.
- Hey, Lucius, I just wanted to share a piece of personal information with you. I've got a... a chubby right now because [starts creaming] This is one of the most awesome experiences of my life!—Talladega Nights: The Ballad of Ricky Bobby
recorded since 1611, from chub (short, thick fish species, used as bait), used metaphorically for "lazy person" since 1558; perhaps influenced by Old Norse kumba "log" and/or kumben "stumpy."