un centenar de

a hundred or so

→ uno
phrase Rare #47,746
a hundred or so Indicates an approximate quantity of around one hundred. It is followed by a plural noun.
SP: Había un centenar de estudiantes en la sala.
EN: There were about a hundred students in the room.

Has ganado por un centenar de votos.

You have won by a hundred votes.

— हैदर (2014)

Si matas a un centenar de hombres se le llama un gran guerrero.

If you kill a hundred men, you are called a great warrior.

— Bāhubali: The Beginning (2015)

Sí, se ha resbalado y caído al menos un centenar de veces.

Yes, he has slipped and fallen at least a hundred times.

— Bāhubali: The Beginning (2015)

Había un centenar de personas en el local.

There were about a hundred people in the venue.