ownache Share definition Flag An ownache is when you get owned so badly that it starts to physically hurt, or ache, thus coining the term: ownache. owner: i owned you so hard. noob: ow, i think i'm getting an ownache. where's the advil? ownache by beejabeeja April 26, 2006 0 0 Get merch Get the ownache mug. Buy Now — $32.95 See more merch