Dictionary.net

a son who has the same first name as his father

the younger of two men

term of address for a disrespectful and annoying male; "look here, junior, it's none of your business"

including or intended for youthful persons; "a junior sports league"; "junior fashions"

used of the third or next to final year in United States high school or college; "the junior class"; "a third-year student"

a son who has the same first name as his father

the younger of two men

term of address for a disrespectful and annoying male; "look here, junior, it's none of your business"

including or intended for youthful persons; "a junior sports league"; "junior fashions"

used of the third or next to final year in United States high school or college; "the junior class"; "a third-year student"

Less advanced in age than another; younger.

Lower in standing or in rank; later in office; as, a junior partner; junior counsel; junior captain.

Composed of juniors, whether younger or a lower standing; as, the junior class; of or pertaining to juniors or to a junior class. See Junior, n., 2.

Belonging to a younger person, or an earlier time of life.

A younger person.

Hence: One of a lower or later standing; specifically, in American colleges, one in the third year of his course, one in the fourth or final year being designated a senior; in some seminaries, one in the first year, in others, one in the second year, of a three years' course.

Less advanced in age than another; younger.

Lower in standing or in rank; later in office; as, a junior partner; junior counsel; junior captain.

Composed of juniors, whether younger or a lower standing; as, the junior class; of or pertaining to juniors or to a junior class. See Junior, n., 2.

Belonging to a younger person, or an earlier time of life.

A younger person.

Hence: One of a lower or later standing; specifically, in American colleges, one in the third year of his course, one in the fourth or final year being designated a senior; in some seminaries, one in the first year, in others, one in the second year, of a three years' course.

Younger; of lower standing; belonging to youth.

The younger of two; one of lower standing; in American colleges and high schools, a student in the next to the last year.

Younger: less advanced.

One younger or less advanced.

One younger or of lower standing.

Younger in years or lower in rank.

The younger of two; a younger person.

Juniorship.

n. A young person ; - the younger of two ; one under age ; a minor ; - one of a lower standing or position.

One younger than another.