This is the 3979th most frequent Spanish word.
belén
"Belén" means "Bethlehem" or "nativity scene."
Here, 'belén' refers to a Nativity scene, a traditional decoration representing the birth of Jesus.
En Navidad, montamos un belén muy bonito en casa.
At Christmas, we set up a very beautiful Nativity scene at home.
In this context, 'belén' is a colloquial term meaning a chaotic or problematic situation.
Ese niño es un belén, siempre causando problemas en clase.
That child is a mess, always causing trouble in class.
Here, 'Belén' is a proper noun referring to the city of Bethlehem.