Definition of minor:
(adj) :
of little significance or importance; of a
musical scale in which some notes are sounded
flat
(n) :
a person who is below the
legal age of responsibility or accountability; a subject area of secondary concentration of a
student at a
college or
university, or the student who has chosen such a secondary concentration
"I had so many credit hours of English, it became my minor."
"I had so many credit hours of English, I decided to minor in it."