The defination on the word "h33t" is a comon slang on the (World Wide Web) for "heat". Often used in computer related text/language.
Some noobs also use it as a slang for the word "sweet" or "awsome" but it's not corect.
h33t it also the name of a big bitorrent tracker on the internett.
eks: "h33t hack dude!" or "what a h33t gathering of gamers!"
eks: "damn h33t BBQ dude!, i burned my toung!"
or "look at that h33t bitch over there, O' she's hot dude!"