A map marker is an object used to indicate a location on a map. The three solutions for the term map marker are PIN (3 letters), PLOTTER (7 letters), and PUSHPIN (7 letters). A PIN is a small metal rod with a sharp point at one end, often used to mark a location on a map. A PLOTTER is a device used to draw precise maps or diagrams. A PUSHPIN is a type of PIN with a flat head and a sharp point, used to attach documents to a wall or bulletin board.