[n] the younger of two men
[n] a third-year undergraduate
[n] a son who has the same first name as his father
[n] term of address for a disrespectful and annoying male; "look here, junior, it's none of your business"
[adj] including or intended for youthful persons; "a junior sports league"; "junior fashions"
[adj] younger; lower in rank; shorter in length of tenure or service
immature, inferior, Jnr, Jr, jr., junior-grade, lower, lower-ranking, lowly, minor(ip), petty(a), secondary, subaltern, subordinate, young, younger