 Is that true? Did I make that up or did I get that? And so I did a little search on 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. So these are segments of a satsuma orange and you just popped up the word plug.