U+0037 U+20E3 · emoji since 2010
The keycap seven is the number 7 on a button. It means lucky number seven, the digit in scores and dates, and seven days of the week.
It marks jackpots, lucky streaks, and week-long countdowns. Of all the keycaps, this is the one people call lucky.
In texting, 7️⃣ 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 7️⃣ is not really one of them.
Its official Unicode name is the Keycap 7 emoji. In everyday chat most people just call it the keycap 7 emoji or describe what it shows. Copy and paste it from the button at the top of this page.
The 7️⃣ 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.