noun
- the head of a military order of knighthood, a lodge, fraternal order, or the like.
- Also grand master, grand·mas·ter. Chess. International Grand Master.
- Also grand·mas·ter. (lowercase) a person at the highest level of ability or achievement in any field.
noun
- the title borne by the head of any of various societies, orders, and other organizations, such as the Templars or Freemasons, or the various martial arts