Wiktionary
n. 1 An wild or untamed horse, characteristically difficult to ride. 2 (context by extension English) A spirited or uncontrollable person. 3 A sexual position.
WordNet
n. a vicious or unbreakable bronco
Usage examples of "bucking bronco".
He wore scuffed boots, tan jeans, a white shirt, and a bolo tie with a silver clasp in the form of a bucking bronco.
In cutting out a steer from a herd, in breaking a vicious wild horse, in sitting a bucking bronco, in stopping a night stampede of many hundred maddened animals, or in the performance of a hundred other feats of reckless and daring horsemanship, the cowboy is absolutely unequalled.
His gaze fell to a small glass case where someone had placed a hand-carved statue of a cowboy on a bucking bronco.
The spy's body gave a powerful galvanic leap like that of a bucking bronco.
His tie was loud and lumpily knotted, his checked jacket clashed with his plaid shirt, and his belt buckle sported a bucking bronco.
The helmsman used the ship's rudders to adjust their course, which, for a moment, made the gentle hobbyhorse become a bucking bronco.
By the time he was a sophomore in college, Gerald's life was what he described as 'more or less under control' (as if life - his life, anyway - were a bucking bronco he had been ordered to tame), but she knew his high school years had been a horror show that had left him with a deep legacy of contempt for himself and suspicion of others.
Old western films played silently'on a bank of TV screens set into one wall, and there was a bucking bronco machine against another wall.
While you were catching the bucking bronco he told me his Dad gets bloody angry pretty often.