junior
n. countable B2 Upper Intermediate Oxford US //ˈdʒunjɝ// UK //dʒˈuːnjɐ// ju·nior
n. a person who is younger or has a lower rank than someone else. In American schools and colleges, it also means a student in their third year of a four-year program.
n. a person of lower rank, status, or seniority than another; also, a student in the penultimate year of a four-year secondary or tertiary educational program.
She is a junior at the local high school.
As a junior in the law firm, he handles the initial research for the senior partners.
While the senior members of the committee set the long-term strategy, the juniors are responsible for the daily execution of the project tasks.
Usage
Often used as a title after a name to distinguish a son from a father with the same name, typically abbreviated as 'Jr.'.