This is the 3814th most frequent Portuguese word.
carrefour
"Carrefour" is not Portuguese; it's French. It means "crossroads" or "intersection" in English.
Here, 'carrefour' is used as a proper noun, referring to a large supermarket chain.
Eu fui ao carrefour comprar mantimentos.
I went to Carrefour to buy groceries.
In this case, 'carrefour' refers to a crossroad or intersection, used as a common noun.
No carrefour da avenida, havia um semáforo quebrado.
At the crossroad of the avenue, there was a broken traffic light.
Here, 'carrefour' is employed metaphorically to describe a pivotal point or decision context in her speech.