Greater in dignity, rank, importance, significance, or interest.
Greater in number, quantity, or extent.
Notable or conspicuous in effect or scope.
Prominent or significant in size, amount, or degree.
Involving great risk, serious, life-threatening.
Of full legal age, having attained majority.
Of or relating to a subject of academic study chosen as a field of specialization.
Having intervals of a semitone between the third and fourth, and seventh and eighth degrees. (of a scale)
Equivalent to that between the tonic and another note of a major scale, and greater by a semitone than the corresponding minor interval. (of an interval)
Equivalent to that between the tonic and another note of a major scale, and greater by a semitone than the corresponding minor interval. (of an interval)
(of a key) Based on a major scale, tending to produce a bright or joyful effect.
Bell changes rung on eight bells.
Indicating the elder of two brothers, appended to a surname in public schools.
Occurring as the predicate in the conclusion of a categorical syllogism. (of a term)
Containing the major term in a categorical syllogism. (of a premise)

A rank of officer in the army and the US air force, between captain and lieutenant colonel.
A rank of officer in the army and the US air force, between captain and lieutenant colonel.
A person of legal age.
Ellipsis of major key.
Ellipsis of major interval.
Ellipsis of major scale.
A system of change-ringing using eight bells.
A large, commercially successful company, especially a record label that is bigger than an indie.
The principal subject or course of a student working toward a degree at a college or university.
The principal subject or course of a student working toward a degree at a college or university.
Ellipsis of major term.
Ellipsis of major premise.
Ellipsis of major suit.
A touchdown, or major score.
A goal.
(slang) An elder brother (especially at a public school).
A large leaf-cutter ant that acts as a soldier, defending the nest.
(obsolete) Alternative form of mayor and mair.

Used in a phrasal verb: major in.