A bronco-buster is a person who tames wild horses, typically by riding them. The term can also refer to someone who is particularly skilled at riding horses. The crossword solutions for the term 'bronco-buster' are Tamer (5 letters), WAHOO (5 letters), Tames (5 letters), and Elway (5 letters). Tamer is an obvious solution, as it is the job description of a bronco-buster. WAHOO is a Native American word meaning 'yell of joy or approval', which could be used to describe the feeling of successfully taming a wild horse. Tames is the past tense of the verb 'TAME', which is what a bronco-buster does. Finally, Elway is a reference to John Elway, a former NFL quarterback who was known for his skill in riding horses.