|1.||[ noun ] term of address for a disrespectful and annoying male|
"look here, junior, it's none of your business"
|2.||[ adjective ] younger; lower in rank; shorter in length of tenure or service|
|Related terms:||senior younger junior-grade inferior minor young seniority|
|3.||[ adjective ] (education) used of the third or next to final year in United States high school or college|
"the junior class" "a third-year student"
|4.||[ noun ] (education) a third-year undergraduate|
|5.||[ noun ] the younger of two men|
|6.||[ noun ] Last name, frequency rank in the U.S. is 12396|
|7.||[ noun ] Man's first name, popularity rank in the U.S. is 532|
|8.||[ adjective ] including or intended for youthful persons|
"a junior sports league" "junior fashions"
|9.||[ noun ] a son who has the same first name as his father|