This is the 1525th most frequent French word.
fermer
To close.
Here 'fermer' is used in the context of closing something, specifically a physical object such as a door.
Je vais fermer la porte car il fait froid.
I am going to close the door because it is cold.
In this usage, 'fermer' refers to shutting down or closing digital applications or software.
Pour éteindre l'ordinateur, il faut d'abord fermer les applications ouvertes.
To turn off the computer, you must first close the open applications.
Here 'fermer' is used to describe the action of closing or shutting eyes, moving across different contexts of usage.