Where does “greycing” come from?

greycing (English) comes from English racing, from English race, from Middle French race, from Italian razza, from Italian razzo, from Italian raggio, from Latin radius, from English -án.

Ancestry of “greycing”, step by step

greycing traces back through two separate lines of ancestry.

via English racing

StepLanguageWordMeaning
1EnglishracingThe sport of competing in races; present...
2EnglishraceA contest between people, animals, vehicles, etc....
3Middle Frenchracerace; breed
4Italianrazzarace, breed; kind, type; family, descent
5Italianrazzoskyrocket; Ellipsis of razzo di segnalazione;...
6Italianraggioray, beam, shaft; spoke; radius
7Latinradiusray; staff, rod; spoke
8English-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
9Middle English-an

via English greyhound

StepLanguageWordMeaning
1EnglishgreyhoundA lean breed of dog used in hunting and racing; A...
2Old Englishgrīġhundgreyhound
Every word from Middle English -an