Another spelling of "ownage", but way cooler. It is used to describe a person, place, or thing that is used to own somebody.
by C&B Connection June 23, 2006
Another way of spelling ownage. Gamertags on xbox live, and other comp games are all taken that involve the owned and pwned words, so onij and pwnij are other says to spell them. Btw.. onij is like the best halo player in the world.
by x1337xPWN3R May 19, 2006