 That's what someone told me a section of an orange is called, and I was all proud of this. And then later I went home and thought, is that true? Did I make that up? Where did I get that? And so I did a little etymology search about it, and I didn't find anything about a plug. I found something about a peg, but I am almost certain a long time ago someone with a scientific background told me that indeed it was called a plug. So I wanted to check with you all so I don't mislead my students.