xxx

noun1

1. •
   An abbreviation for kisses, usually placed at the end of a letter or text message, often alongside ooo (hugs).

   • [written on a letter] Dear Chip — See you tonight. Love xxxx Clarice — 1952

adjective4

1. •
   Extreme or hardcore pornography; or, less strictly, any pornographic content.

   • Pornography—or "porno," to use the hip term—is intended primarily to sexually arouse the viewer, or reader, or maybe listener. Porno films enjoy graphic realism. These are the XXX films. — 1973
2. •
   Extra strong; very high quality.
3. •
   Bald.
4. •
   Unknown eye or hair color.

noun2

1. •
   (rare) Triple X syndrome.
2. •
   (no longer used) The conventional Morse code call made when in an urgent situation but not in immediate distress.

verb1

1. •
   To delete; to cross out, especially to conceal or suggest vulgar language.