The term 'Cowboy or Bronco' can be summarized as a professional athlete who plays in the National Football League (NFL). The acronym PRO, which stands for Professional, is often used to describe such players. Cowboys and Broncos are two of the most popular teams in the NFL, and their players are highly skilled and competitive. Cowboys and Broncos players are known for their athleticism, strength, and determination, and they are often seen as role models for aspiring athletes.