1.-The name given to the new virus in resident evil 5, which was obtained from the progenitor virus and tends to turn live beings into some nasty bunch of leech-like stuff.
2.-A symbol of a snake devouring its own tail symbolizing the unity of all things.
1)-Damn! That uroboros wesker
is some tough motherfucker, huh? -Yeah man, just shoot at it with rocket launchers till he snuffs it
2)-Do you think Nietzsch
got the idea of Eternal Return
from Uroboros? -No dude, he got that from the wheel of samsara