50
'leet' or elite in hacker speak. Originally from a group called Dead Cow but spread through forums and sites like a virus and now all the n00bs say it. Also (apparently) one of the favourite phrases of ad0 and ek0, 'famous' hackers on the circuit. People who aspire to become hackers use it. Also used as a term for substituting numbers and letters so instead of saying restocker you'd say r35t0ck3r.
'ZOMG this is so 1337!'

'u r a 1337 r35t0ck3r!'
'Oh please, you are way more 1337 than me!'
'you're both n00bs for even using 1337.'
by SkrewyRebirth March 21, 2006
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51
1) (adj.) Superior, overall better, and cooler than something else. Often used by online maniacs.
2) (n.) A computer-based language involving numbers and symbols, without (Or with a minimal amount of) letters.
1) "dood, taht's so 1337!"

2) "|)|_||)3, 7#47'$ $0 1337!!!11"
by Some call me...Tim. February 22, 2005
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52
A term and cipher used by retards and idiots with a fourth grade education.
OMFG LIEK LMFAO LOOOl IM 1337!1111111
by Peyton February 05, 2004
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53
1337 means leet or elite in leet speak. leet speak is a language created by substituting letters with symbols or numbers. this language is reserved for the uppermost tier of gamers.
the previous paragraph in leet:

1337 /\/\34n5 1337 r 31i73 1n 1337 5p34k. 1337 5p34k i5 4 14n9_493 cr3473d 8y 5_857i7_7in9 13773r5 wi7h 5y/\/\815 r n_/\/\83r5. 7hi5 14n9_4g3 i5 r353rv3d fr t3h _p3r/\/\57 7i3r f 94/\/\3r5.

also:

\/\/7!!1!one11! j00 h4ve 833n 0\/\/n3d!!!! I @m t3h U83r H4><r!!11!!!111!one!!2!@!11!!
by Lukas "n3kr0nk1d December 24, 2006
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54
A word used by anyone who trys to sound more "in the know" about cracking, pornography, online games, forums, and/or skills. Commnly used by wannabe's, newbies, and just plain old morons.
Dude! My Counter-Strike skills are 1337!
My FXP Board is 1337!
by P Diddy January 13, 2003
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55
A word used to easily pick out nerds
Google Results 1 - 10 of about 2,890,000 for 1337. (0.09 seconds)
by APfromMSP August 11, 2005
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56
originating from Dead Cow Cult as UDP port for Back Orifice.

means elite, some of the comments above are pathetic so ignore them. 1337 sp33k is used by gamers, hackers and n00bs. using 1337 doesnt make you a n00b!
ahahah i pwned you
ch00ped j00 n00bie
ph33r m3 4 I am 1337
CPL stlz
by .:: {GOD} ::. NOSGOD May 30, 2004
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