Definitions
1.nounSomeone who takes part in a race.
2.nounA racehorse.
3.nounAn animal known for its fast speed, or suitable for racing; applied especially to a number of North American snakes, certain kinds of lake trout, etc.
4.nounA vehicle or other device used for racing.
5.nounAny of several genera of colubrid snakes.
6.nounA video game involving racing of any kind.