Definition of "pwn"

pwn

/əʊn/

verb
third-person singular simple present pwns, present participle pwning, simple past and past participle pwned or pwnd or pwnt
1. (Internet slang, online gaming, originally leet, transitive, intransitive) To own, to defeat or dominate (someone or something, especially a game or someone playing a game).
  Quotations
  2nd guard: "Yeah, shiiit! I PWNED YO @zz!"
  1999 August 5, Quaestor, “Re: [SP] So..the first victim of the Evil/Hero System”, in rec.games.computer.ultima.online‎ (Usenet), retrieved 2016-09-23, message-ID <37AA8154.D77E6EB8@Skara.Brae>
  Otherwise I use fury as my normal attack. Fury completely pwns!
  2001, Edward Glamkowski, alt.games.diablo2‎ (Usenet)
  When you get to the Temple of Marr, look very closely at the vases at zone-in and see if you can find the picture where Mith Marr "pwns" someone.
  2003, James Grahame, alt.games.everquest‎ (Usenet)
  My Trident pwns the Cirrus Logics!
  2004, Bronney Hui, alt.comp.periphs.videocards.nvidia‎ (Usenet)
  NOOBZ STILL R NOT PWNED. CONTINUE PWNERSHIP UNTIL ALL NOOBZ R PWNED.
  2005, AlphaDream, Mario & Luigi: Partners in Time, Nintendo
noun
countable and uncountable, plural pwns
1. (Internet slang, originally leetspeak) Triumph, victory. Often exclaimed after an opponent in a video game is defeated.
2. (Internet slang, computer security, originally leetspeak) An exploit in computer security.