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1.
Noun (leet) -- A gargantuan bag of ownage dropped down on one person or a team, most often found in the XBox game "Halo 2." From latin root "owned BITCH," ownsworth is the ultimate in tauntsworth technology.

Led to spin-offs such as hosedworth and humpsworth.
-Dude I totally hosed that bitch!
-Oh yea? How badly?
-Dude I took a big ownsworth-like shit on his chest!
by Darth FattyFat December 06, 2005