trifecta Share definition Flag Catholic: Praying the Our Father, Hail Mary and Doxology (Glory Be) for a specific intention. Man, you've got some serious problems and need a lot of supernatural help. I'll pray a trifecta for you! trifecta by prahfit March 18, 2012 0 0 Get merch Get the trifecta mug. Buy Now — $32.95 See more merch