This is the 9895th most frequent French word.
fissure
"Fissure" (French): A crack or split in a surface or material.
In this sentence, 'fissure' refers to a physical crack or opening in the wall.
La fissure dans le mur laisse passer l'air froid.
The crack in the wall lets the cold air pass through.
Here, 'fissure' is used metaphorically to represent a breakdown or flaw in their personal connection.
Après la dispute, une fissure est apparue dans leur relation.
After the argument, a crack appeared in their relationship.
In this context, 'fissure' is describing fractures or lines formed in rocks, related to geological studies.