Meaning

• A military rank between captain and lieutenant colonel.

  "He used to be a major in the army."

Meaning

• The main area of study of a student working toward a degree at a college or university.

  "Midway through his second year of college, he still hadn't chosen a major."

• A student at a college or university concentrating on a given area of study.

  "She is a math major."

• A person of legal age.

• The major premise.

• A touchdown, or major score.

• A large, commercially successful company, especially a record label that is bigger than an indie.

• (British slang) An elder brother (especially at a public school).

• A large leaf-cutter ant that acts as a soldier, defending the nest.