Grawlix

Grawlix (/ˈɡrɔːlɪks/) or obscenicon is the use of typographical symbols to replace profanity, typically using "unpronounceable" characters. Mainly used in cartoons and comics, it has been described as the graphical equivalent of a bleep censor. The first known grawlix appeared in November 1, 1901 story of Gene Carr's comic strip Lady Bountiful.