Xtreme definitions

Xtreme

1) The X in XFL, so some thought
Found on https://www.crosswordclues.com/clue/xtreme

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xtreme

extreme
Found on http://www.noslang.com/dictionary/x/

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Xtreme

Xtreme is a network backdoor Trojan that communicates through port 1090.
Found on http://www.probertencyclopaedia.com/LBA.HTM

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