This is the 8803rd most frequent Catalan word.
espatlles
"Espatlles" means "shoulders" in English.
Here, 'espatlles' refers to the physical shoulders of a person, indicating the location where the backpack is carried.
Ell porta una motxilla pesada a les espatlles.
He carries a heavy backpack on his shoulders.
In this sentence, 'espatlles' is used to describe the physical action of leaning one's shoulders against an object.
Has de donar les espatlles a la paret per descansar.
You need to place your shoulders against the wall to rest.
This usage of 'espatlles' is metaphorical, symbolizing the weight or responsibility someone feels emotionally or mentally.