Mott-Parce Share definition Flag An upstate New York term for a traitor or a sellout. Ralph: Dude did Jimmy quit the team to join our rivals? Dave: Yea man, what a total Mott-Parce. Mott-Parce by Noz Dormuu December 19, 2008 0 0 Get merch Get the Mott-Parce mug. Buy Now — $32.95 See more merch