major
adj//ˈmeɪ.d͡ʒə(ɹ)//myndig, major, huvudämne
Of full legal age, having attained majority.
(military ranks) A rank of officer in the army and the US air force, between captain and lieutenant colonel.
(education, North America, Australia, New Zealand) The principal subject or course of a student working toward a degree at a college or university.