Wiktionary
t-zone
n. The forehead and nose considered together as a region of the face that can, in some people, produce excess sebum compared to other parts of the face.
Usage examples of "t-zone".
I feel as if I'm leaking gin and lager and peanut oil from my T-zone, and there's something new, a hard pad of matter under the skin, about the size of a peanut, that moves around when I touch it.