pwn

Short definition from Wiktionary

Verb

1. 1
   To own, to defeat or dominate (someone or something, especially a game or someone playing a game).

Noun

1. 1
   Triumph, victory. Often exclaimed after an opponent in a video game is defeated.
2. 2
   An exploit in computer security, especially relating to machine code.
3. 3
   Abbreviation of pulsar wind nebula.
4. 4
   Abbreviation of person with narcolepsy.