Definition of "Double"

A surname.  examples

(US, motor racing) Collectively, both the Indianapolis 500, a day race, and the Coca-Cola 600, an evening race, both of which are run on Memorial Day weekend Sunday. Used concerning racers who (wish[/ed/ing] to) participat[e/ed/ing] in both events, typically using a private jet to travel between Indianapolis, Indiana, after the 500 and Charlotte, North Carolina, to get to the 600.  examples