Definitions

1. adjective

of or relating to horses that are descended from animals that were registered in a purity-of-breed registry, especially the Thoroughbred registry in the United Kingdom

“She researched the truebred Thoroughbred horses that participated in the historic race.”

2. noun

a horse that is descended from animals that were registered in a purity-of-breed registry, especially the Thoroughbred registry in the United Kingdom

“The truebred stallion won the competition due to its impressive speed and agility.”