What is the meaning of Racer?

Someone who takes part in a race.

A racehorse.

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

An 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.

Any of several genera of colubrid snakes.

A video game involving racing of any kind.

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