It’s called a “dilated pore of winer,” which is essentially a large, solitary open blackhead.
That’s what the description on the YouTube video of Dr. Sandra Lee (a.k.a, Dr. Pimple Popper) says.
I have another word for it:
Dr. Lee is impervious to this stuff, having made a career of popping all sorts of stuff and then putting on social media. She’s the best at it, and we can’t stop watching. Remember, her videos have been viewed more than 1 billion (with an ‘B’) times.
And, she’s not slowing down.