bronco
nounUK /ˈbrɒŋ.kəʊ/
US /ˈbrɑːŋ.koʊ/
A bronco is a wild horse that kicks and jumps to throw people off.
The cowboy held on tight as the bronco bucked wildly.
OTHER MEANINGS
2. A horse that has never been tamed or ridden.
They caught a bronco out on the open range.
3. A rodeo event in which riders try to stay on a bucking horse.
He won first place in the bronco riding contest.
4. A nickname for a tough, unruly person.
That little bronco never sits still for a minute.