This is the 7209th most frequent Spanish word.
gis
Chalk.
Here, 'gis' is used to refer to a piece of chalk, particularly in an educational or artistic setting.
Yo uso un gis para dibujar en la pizarra.
I use chalk to draw on the board.
In this instance, 'gis' is again referring to chalk, indicating its presence and location.
Hay un gis en el suelo que alguien dejó caer.
There is a piece of chalk on the ground that someone dropped.
Here, the plural 'gises' is utilized to describe various pieces of colored chalk for artistic purposes.