<p><strong>Adjective</strong></p><ul><li>designating the younger of two men bearing the same full name, as a son named after his father; often written as Jr. or jr.</li><li>of more recent appointment or admission, as to an office or status; of lower rank or standing: a junior partner.</li><li>(in American universities, colleges, and schools) noting or pertaining to the class or year next below that of the senior.</li><li>subordinate to preferred creditors, mortgagees, and the like.</li><li>of later date; subsequent to: His appointment is junior to mine by six months.</li><li>composed of younger members: The junior division of the camp went on the hike.</li><li>being smaller than the usual size: The hotel has special weekend rates on junior suites.</li><li>(of an iron or steel shape) relatively small, but rolled to a standard form.</li><li>of, for, or designating clothing in sizes 3–15 or those who wear it: a junior dress; junior measurements; the junior department.</li></ul><p><strong>Noun</strong></p><ul><li>a person who is younger than another.</li><li>a person who is newer or of lower rank in an office, class, profession, etc.; subordinate.</li><li>a student who is in the next to the final year of a course of study. Often juniors.</li><li>a range of odd-numbered sizes, chiefly from 3 to 15, for garments that fit women and girls with shorter waists, narrower shoulders, and smaller bustlines than those of average build.</li><li>the department or section of a store where garments in these sizes are sold.</li><li>a garment in this size range.</li><li>a woman or girl who wears garments in this size range.</li><li>(initial capital letter) a member of the Girl Scouts from 9 through 11 years old.</li><li>Informal. (often initial capital letter) a boy; youth; son: Ask junior to give you a hand with the packing.</li></ul>