adjective

1. the younger: written Jr. after the name of a son who bears exactly the same name as his father
2. of more recent position or lower status a junior partner, a junior lien
3. of later date
4. made up of younger members
5. ☆ of or for juniors in a high school or college

Etymology: L, contr. of juvenior, compar. of juvenis, young

noun

1. a younger person
2. a person of lower standing or rank
3. ☆ a student in the next-to-last year of college or the eleventh grade in high school
4. ☆ a size of clothing for slight women and girls with high waistlines