The possessor of a master's degree.
Master; sir: a title used in the Middle Ages, given to a person in authority, or to one having a licence from a university to teach philosophy and the liberal arts.
A person who teaches, especially one employed in a school.
The index finger; the forefinger.
An indication; a lesson.
The second highest office in the Aaronic priesthood, held by priesthood holders of at least the age of 14.