Wiktionary
balletmaster
n. An employee of a ballet company who is charged with maintaining the skill of the company's dancers
Usage examples of "balletmaster".
He took Ricci from one table to another, and the balletmaster cordially shook the hands of the men and boys—even those of the Chinese and blacks—and kissed the hands of the women and girls.
The balletmaster seemed genuinely pleased to have them visit, and introduced them to the dancers in the hall—young men and women, younger boys and girls—all handsome, svelte and lithe, all wearing practice costumes.