| 1. | the head of a military order of knighthood, a lodge, fraternal order, or the like. |
| 2. | Also, grand master, grandmaster. Chess. International Grand Master. |
| 3. | Also, grandmaster. (lowercase ) a person at the highest level of ability or achievement in any field. |
| a chess player in the highest class of ability, as determined through specified types of international competitions. |
| grand master or grand·mas·ter (grānd'mās'tər) n.
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