What does pwned mean in text?

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Tags

1. #taunt
2. #ownership
3. #humiliation
4. #conquer
5. #pwned
6. #slang
7. #derived
8. #rival
9. #leetspeak
10. #domination
11. #soundly
12. #implies
13. #appropriate
14. #culture
15. #opponent
16. #primarily
17. #internet
18. #meaning
19. #defeated
20. #based
21. #video