Yes, majors is a Scrabble word!

Verb

1. Have as one's principal field of study

Noun

1. The most important league in any sport (especially baseball)

2. A commissioned military officer in the United States Army or Air Force or Marines; below lieutenant colonel and above captain

3. British statesman who was prime minister from 1990 until 1997 (born in 1943)

4. A university student who is studying a particular field as the principal subject

5. The principal field of study of a student at a university