Person versus Offline: a method of combat in persistant online games, where you raid the bases and bodies of players who are offline, in order to avoid PvP combat
"I logged in to the game today to find I'd been PvO'd overnight; they killed my toon and knicked all my stuff!"
"Man, we PvO'd that noob good last night!"
"Man, we PvO'd that noob good last night!"
by gypsythief June 23, 2015