adjective
not very important or valuable
b always used before a noun :small in number, quantity, or extent
not very serious :not causing much trouble or damage
music
having semitones between the second and third, the fifth and sixth, and sometimes the seventh and eighth notes in a scale
based on a minor scale
always used before a noun :not yet old enough to have the rights of an adult
noun
plural -nors
[count] a person who is not yet old enough to have the rights of an adult
US :a second subject studied by a college or university student in addition to a main subject
the minors
US informal :the minor leagues of baseball
verb
-nors; -nored; -noring
minor in
[phrasal verb]
minor in (something) US :to have (a specified second subject of study) in addition to your main subject
US