noun
zit
ZIT/zɪt/
A pimple on the skin.
A small red zit stands out on the man's cheek.

Etymology
Zit is recorded as U.S. teenage slang for an acne pimple. Its origin is unknown, so there is no established older image or root meaning to explain.
In context
I also noticed that I had a pimple a zit and it was a pretty big one and this in two days …