U+1F515 · emoji since 2015
The bell with a slash means notifications off and silent mode. It means peace, quiet, and muting the noise.
It marks do-not-disturb time, the icon for switching everything to silent and tuning out.
In texting, 🔕 does not carry a widely used hidden or slang meaning, so you can usually take it at face value. People send it just as it looks, to add a little visual touch or set the mood of a message. Only a handful of emoji have a separate texting code, and 🔕 is not really one of them.
Its official Unicode name is the Bell with Slash emoji. In everyday chat most people just call it the bell with slash emoji or describe what it shows. Copy and paste it from the button at the top of this page.
The 🔕 leads off a short phrase, and the rest of the words are written in cipher, every letter disguised as another emoji. Tap decipher to reveal the whole line.
Or make your own cipher in the translator.