"majors" in the noun sense
1. major
a commissioned military officer in the United States Army or Air Force or Marines below lieutenant colonel and above captain
2. Major, John Major, John R. Major, John Roy Major
British statesman who was prime minister from 1990 until 1997 (born in 1943)
3. major
a university student who is studying a particular field as the principal subject
"she is a linguistics major"
4. major
the principal field of study of a student at a university
"her major is linguistics"
"majors" in the verb sense
1. major
have as one's principal field of study
"She is majoring in linguistics"
Source: WordNet® (An amazing lexical database of English)
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