Definitions for "Bingo Marker"
Keywords:  dauber, crayon, marker, hall, ink
Usually a "dauber." Your marker is used to cover the numbers on the bingo game card. While not every bingo hall requires that a dauber be used as the marker, most do - so check with the hall's rules if you do not plan to use a dauber.
A ink marker or pen used to check out the boxes in the bingo card as the numbers are called out.
See Dauber