To be honest, I only recently came to know. I knew it was an endearment but I asked around when I, myself, was called that by Taas. To him it means something different than it does to Korrin, but he told me the possible meanings.

[ He is still sorting out how that feels- other than good. He likes it, quite a bit. As much as Araceli enjoys hearing it from Korrin, he's sure. ]

That was a joke! I promise, that was a joke. You two are far too charming as you are.