a coded spelling system and language used in very informal communications on the Internet, featuring letters combined with numbers or special characters in place of letters that they may resemble, and including inventive misspellings, jargon, and slang.
the spelling conventions and jargon of this system and language.
Also called leet, l33t, 1337.
Origin of leetspeak
1980-85;leet (shortening and alteration of elite) + -speak