IPA: /ˈreɪsər/
KK: /ˈreɪsər/
A person or animal that competes in races, often in a fast vehicle or on foot.
The racer sped around the track, trying to win the championship.
Racer → It is formed from "race" (from Old French *racier*, meaning to compete in speed) and "-er" (meaning a person who). A racer is a person who competes in a race.
Think of someone who is competing in speed — the word 'race' shows the competition, and '-er' indicates a person. This helps you remember that a racer is someone who races.