[Ojamajoz]

Hi people. This is just a quick little question I had.

Okay, so デブ means "fat" in Japanese. I asked my Japanese teacher about it, but he didn't know what it meant, so that must mean it's slang, right? That got me thinking about the etymology of the word. It sounds like it comes from "Deb", which I'm guessing is maybe some kind of store for obese woman or something. I'm curious as to where this word came from. Does anyone know?

Thank you!!

EDIT: FYI, my Japanese teacher is from Japan.