Cuaresma 

I’ve been hearing about a holiday called «cuaresma» on the Latin radio stations I always listen to. I looked it up and learned it means Lent. It comes from the Latin word «cuadrogésimo», which means forty days, the length of Lent. I love learning!

References

Diccionario de la lengua española. [Mobile application]. Madrid, ES. Real Académia Española y Associatión de Academias Españolas.