This is the 3978th most frequent French word.
boucle
Loop or curl.
Here, 'boucle' refers to an object used to tie or fasten, specifically a hairtie or loop.
J'ai attaché mes cheveux avec une boucle.
I tied my hair with a hairband.
In this sentence, 'boucle' is used to denote a fastening or clasp mechanism, such as a shoe buckle.
La boucle de mes chaussures s'est cassée.
The buckle of my shoes broke.
Finally, 'boucle' metaphorically represents a cycle or loop, in this case referring to a recurring period of time.