thoroughbred

I. adjective Date: 1701 1. thoroughly trained or skilled <

a thoroughbred soldier

> 2. bred from the best blood through a long line ; purebred <

thoroughbred dogs

> 3. a. capitalized of, relating to, or being a Thoroughbred horse b. having characteristics resembling those of a Thoroughbred II. noun Date: 1820 1. a purebred or pedigreed animal 2. a thoroughly educated or skilled person 3. capitalized any of an English breed of light speedy horses kept chiefly for racing that originated from crosses between English mares of uncertain ancestry and Arabian stallions