E pluribus unum Share definition Flag Latin phrase meaning "Out of many, one." Otherwise known as the gibberish on the back of quarters. Jim: Whoa, what's this "E pluribus unum" nonsense on the back of my coin? John: Hell if I know. E pluribus unum by ShAdOwZ March 25, 2009 0 0 Get merch Get the E pluribus unum mug. Buy Now — $32.95 See more merch