A person who organizes and oversees the playing of the fantasy role-playing game Dungeons & Dragons, in particular by narrating the details of the story that are not controlled by the players.
taking on the role of Dungeon Master is no simple task
Definition of Dungeon Master in US English:
Dungeon Master
noun
Gaming
A person who organizes and oversees the playing of the fantasy role-playing game Dungeons & Dragons, in particular by narrating the details of the story that are not controlled by the players.
taking on the role of Dungeon Master is no simple task