(noun) First seen in an Internet
meme that began circulating circa
summer 2018, the word “chonk” refers to an aggressively chubby housecat.
According to the cat girth scale depicted in the
meme, a cat is a chonk (or chonker) if it has between 30 and 60 percent body fat.
Variations: chomk, chonker, heckin’ chonker