Major

(noun) a commissioned military officer in the United States Army or Air Force or Marines; below lieutenant colonel and above captain. Synonyms: major.

(noun) British statesman who was prime minister from 1990 until 1997 (born in 1943). Synonyms: John Major, John R. Major, John Roy Major.

(noun) a university student who is studying a particular field as the principal subject. Synonyms: major. Examples: "She is a linguistics major."

(noun) the principal field of study of a student at a university. Synonyms: major. Examples: "Her major is linguistics."

(verb) have as one's principal field of study. Synonyms: major. Examples: "She is majoring in linguistics."

(adj) of greater importance or stature or rank. Synonyms: major (vs. minor). Examples: "A major artist." "A major role." "Major highways."

(adj) greater in scope or effect. Synonyms: major (vs. minor). Examples: "A major contribution." "A major improvement." "A major break with tradition." "A major misunderstanding."

(adj) greater in number or size or amount. Synonyms: major (vs. minor). Examples: "A major portion (a majority) of the population." "Ursa major." "A major portion of the winnings."

(adj) of the field of academic study in which one concentrates or specializes. Synonyms: major (vs. minor). Examples: "His major field was mathematics."

(adj) of a scale or mode. Synonyms: major (vs. minor). Examples: "Major scales." "The key of d major."

(adj) of greater seriousness or danger. Synonyms: major (vs. minor). Examples: "A major earthquake." "A major hurricane." "A major illness."

(adj) of full legal age. Synonyms: major (vs. minor).

(adj) of the elder of two boys with the same family name. Synonyms: major(postnominal). Examples: "Jones major."