Does anyone know what the red circle with the slash going throught it is called? Is there a name or do we have to refer to it as the circle with the line? Thanks much.
-meanie
(Universal) Prohibition Symbol (or Circle)
Oh. Well that takes care of that. Thanks. 
AKA the Universal Nullification Symbol.
I’d just like to point out that that is exactly what my wife does to me a couple times a week.
her: “Honey, I’m looking for that thing.”
me: “Vanna, I’d like to buy a noun.”
I call it the “Don’t” Sign.
Old clipart files caled it “International No”
Hmm, I like the sound of “Don’t” sign.