What is the meaning of Racer?

Agent noun of race: one that races or is used for racing.

2. A person who participates in races, especially an athlete.

   A person who participates in races, especially an athlete.

   A racehorse.

   A racing pigeon.

   A vehicle (or other device) used for, or designed specifically for, racing.

   Any of several genera of colubrid snakes.

   A video game involving racing of any kind.

   A racist.

   racer

   indefinite plural of race

   present of race

   a racer, one who races

   racecar

   (any kind of) vehicle used for racing, racer

   Source: wiktionary.org