marcador
/maɾkaˈdoɾ/ · B2 · adj
scoreboard
📌 marcar (to mark) + -dor (one who does) = the thing that marks
Marcador comes from marcar, to mark, plus the agent suffix -dor, like English -er. So it is whatever does the marking: a marker pen, a bookmark, a scoreboard that marks points, or a genetic marker that flags a spot.