DCHP-1 Online
bronco-busting 
n. the breaking of wild horses.
- 1889 Broncho "busting" and base-ball are the sports most indulged in [in] these times.
- 1920 There was also an exhibition of "bronco busting" and a pie-eating contest for the boys.
- 1889 Broncho "busting" and base-ball are the sports most indulged in [in] these times.