L33t or Eleet (sometimes rendered leet, 1337, or 31337), also known as Leetspeak, is an alphabet used primarily on the Internet, which uses various combinations of ASCII characters to replace Latinate letters. The term is derived from the word "elite", and the usage it describes is a specialized form of symbolic writing. Different dialects of leet are found on different online forums.
Example sentence: L337 15 n07 4 c0mm0n 1n73rn37 5p34k 4m0n9 r34l h4x0r
English rendering: Leet is not a common internet speak among real hackers.
Example sentence: t3h l337 |-|4x02 473 m4h 54|\||)vv1[|-|
English rendering: The leet hacker ate my sandwich.