Where does “racehorse” come from?

Racehorse derives from English race and horse, where race comes from English raze, from Proto-Italic wrād-ī-, ultimately from Proto-Indo-European ḱers- meaning to run.

racehorse (English): A horse that competes in races

Definitions

  1. A horse that competes in races

Ancestry of “racehorse”, step by step

racehorse traces back through two separate lines of ancestry.

via English race

StepLanguageWordMeaning
1EnglishraceA contest between people, animals, vehicles, etc....
2Middle Frenchracerace; breed
3Italianrazzarace, breed; kind, type; family, descent
4Italianrazzoskyrocket; Ellipsis of razzo di segnalazione;...
5Italianraggioray, beam, shaft; spoke; radius
6Latinradiusray; staff, rod; spoke
7English-ánOf or pertaining to;. Often added to words of Latin origin, but also used with words of other origins. When a word ends in a
8Middle English-an

via English HORSE

StepLanguageWordMeaning
1EnglishHORSEA poker variant consisting of five different...
2Middle EnglishhorseAlternative form of hors; Alternative form of...
3Old Englishhorshorse
4Proto-West Germanichrosshorse
5Proto-Germanichrussąhorse
6Proto-Indo-Europeanḱers-to run
Every word from Middle English -anEvery word from English -ánEvery word from Latin radius