Definition: The word "jeff hiller" refers to a retired American football coach who served as head coach of the Indianapolis Colts from 1973 to 1980. Hiller was known for his innovative coaching style that emphasized physical and mental preparation, teamwork, and discipline.<0x0A>The definition of "jeff hiller" is a retired American football coach who served as head coach of the Indianapolis Colts from 1973 to 1980. He was known for his innovative coaching style that emphasized physical and mental preparation, teamwork, and discipline.