MASTER AS A VERB

Verb

master (third-person singular simple present masters, present participle mastering, simple past and past participle mastered)

1. (intransitive) To be a master.
2. (transitive) To become the master of; to subject to one's will, control, or authority; to conquer; to overpower; to subdue. quotations ▼
3. (transitive) To learn to a high degree of proficiency.

It took her years to master the art of needlecraft.

4. (transitive, obsolete) To own; to possess. quotations ▼
5. (transitive, especially of a musical performance) To make a master copy of.
6. (intransitive, usually with in) To earn a Master's degree.

He mastered in English at the state college.