noun

1. Someone who has control over something or someone.

2. The owner of an animal or slave.

3. The captain of a merchant ship; a master mariner.

Synonyms: establishing shot, long shot, magistrate, master's, masters, captain, skipper

verb

1. To be a master.

2. To become the master of; to subject to one's will, control, or authority; to conquer; to overpower; to subdue.

3. To learn to a high degree of proficiency.

   “It took her years to master the art of needlecraft.”

noun

1. (in combination) A vessel having a specified number of masts.

   “a two-master”

noun

1. A master's degree.