Princeton's WordNet

1. racer, race driver, automobile driver(noun)

   someone who drives racing cars at high speeds

2. racer, race car, racing car(noun)

   a fast car that competes in races

3. racer(noun)

   an animal that races

4. racer(noun)

   slender fast-moving North American snakes

Wiktionary

1. racer(Noun)

   Someone who takes part in a race.

2. racer(Noun)

   A racehorse.

3. racer(Noun)

   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.

4. racer(Noun)

   A vehicle or other device used for racing.

Origin: From race + -er.

Webster Dictionary

1. Racer(noun)

   one who, or that which, races, or contends in a race; esp., a race horse

2. Racer(noun)

   the common American black snake

3. Racer(noun)

   one of the circular iron or steel rails on which the chassis of a heavy gun is turned

• renvoertuigAfrikaans
• قارِب أو سيّارَه مُصَمَّمَه خِصّيصا للسِّباقArabic
• състезателна кола/лодка и пр.Bulgarian
• corridaPortuguese (BR)
• závodní vůzCzech
• der Rennwagen, das RennradGerman
• racer-Danish
• αγωνιστικό (όχημα)Greek
• coche/bicicleta de carrerasSpanish
• võidusõiduauto, võidusõiduratasEstonian
• تند روFarsi
• kilpa-auto, -pyörä yms.Finnish
• voiture/vélo de courseFrench
• -מֵרוֹץHebrew
• धावकHindi
• vozilo za utrkuCroatian
• versenygép, versenyautóHungarian
• mobil atau sepeda balapIndonesian
• kappakstursbíll/-hjólIcelandic
• automobile/bicicletta da corsaItalian
• 競走車Japanese
• 경주하는 것Korean
• lenktyninis automobilis, dviratisLithuanian
• sacīkšu modelisLatvian
• pelumbaMalay
• raceauto, racefietsDutch
• racerbil/-sykkel osv.Norwegian
• samochód, rower itd. wyścigowyPolish
• تند روPersian
• په مسابقه كىګډون كوونكى: دمسابقى شيان (لكه موټر، اس، بايسكلPashto
• de corridaPortuguese
• vehicul de curseRomanian
• гоночный автомобиль, велосипедRussian
• pretekárske auto, bicykel ap.Slovak
• dirkalecSlovenian
• trka;Serbian
• kapplöpningshäst, racerbil, -cykel, -båtSwedish
• คน สัตว์หรือพาหนะที่เข้าแข่งขันความเร็วThai
• yarışmacı, müsabıkTurkish
• 競速比賽的車輛Chinese (Trad.)
• перегоновий автомобіль тощоUkrainian
• دوڑ میں حصہ لینے والاUrdu
• xeđuaVietnamese
• 比赛用车Chinese (Simp.)