Motocross (often shortened to MX or Moto X) is a form of motorcycle sport or all-terrain vehicle racing held on enclosed off-road circuits. Motocross is derived from the French, and traces its origins to British Scrambling competitions. The name \"motocross\" is a contraction derived from the words \"Motorcycle\" and \"Cross Country\". bike, crash, crashes, dirt, extreme, moto, motocross, MX, out, racing, supercross, wipe