It can translate important, commander, senior, senior, elderly, adult. It can also be a military grade. It is widely used to indicate the title or position of a burgomaster: mayor.
It is the adjective "major", which is used to name a person "of legal age", the military degree, and a university specialization. It was taken from French, but its origin is Latin for maior, ior, ius ("greater than").
It does not exist in Spanish; maybe it is a mistake by majos, major, better, majorero, mador, majar, ingles/major, . . .
MAJOR 1 . Anglicism by MAJOR , SERIOUS , SIGNIFICANT . 1 . University academic degree . Generally there are 4 : Bachelor or minor 2 . Licenciado o major 3 . Magister 4 . doctor. 2 . Military rank, above that of captain and under that of lieutenant colonel