No symbol - Wikipedia
https://en.m.wikipedia.org/wiki/No_symbol
WebThe general prohibition sign, [1] also known informally as the no symbol, ' do not' sign, circle-backslash symbol, nay, interdictory circle, prohibited symbol, don't do it symbol, or universal no, is a red circle with a 45-degree diagonal line inside the circle from upper-left to …
DA: 61 PA: 55 MOZ Rank: 75