thoroughbred

A purebred or pedigreed animal, especially a horse.

Any of a breed of horses, bred chiefly for racing, originating from crosses between Arabian stallions and English mares.

A well-bred person.

Bred of pure stock; purebred.

Relating or belonging to horses of the Thoroughbred.

Thoroughly trained or educated; well-bred.

Of pure or unmixed breed, stock, or race; bred from a sire and dam of the purest or best blood. See II.

Hence Having the qualities characteristic of pure breeding; high-spirited; mettlesome; elegant or graceful in form or bearing: sometimes applied colloquially to persons.

Thoroughgoing; thorough.

An animal, especially a horse, of pure blood, stock, or race; strictly, and as noting horses, a race-horse all of whose ancestors for a given number of generations (seven in England, five in America) are recorded in the stud-book.