The wizard and prophet of the legends of King Arthur, who guides the young Arthur to the throne of Britain and advises him as king. His name stands for the wise old wizard of Western fantasy.
As a plain word 梅林 is a plum grove, as in the story behind 望梅止渴: 曹操 told his thirsty troops a plum grove lay ahead. It is also a place name: Shenzhen's 梅林 is a well-known neighbourhood.