This is the 1490th most frequent Catalan word.
major
"Major" in Catalan means "older," "main," or "major," depending on context.
In this sentence, 'major' is used as an adjective to indicate the oldest in age among siblings.
El meu germà és el major de la família.
My brother is the oldest in the family.
Here, 'major' is used as an adjective meaning significant or important to describe the severity of the problem.
Hem tingut un problema major amb l'organització.
We have had a major problem with the organization.
In this sentence, 'major' is used as a noun (borrowed from English terminology), referring to a principal field of study in academics.