资料来源 : pyDict

年少的,较年幼的;资历较浅的;三年级的年少者;等级较低者;三年级学生

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Junior \Jun"ior\, a. [L. contr. fr. juvenior, compar. of juvenis
   young. See {Juvenile}.]
   1. Less advanced in age than another; younger.

   Note: Junior is applied to distinguish the younger of two
         persons bearing the same name in the same family, and
         is opposed to {senior or elder}. Commonly applied to a
         son who has the same Christian name as his father.

   2. Lower in standing or in rank; later in office; as, a
      junior partner; junior counsel; junior captain.

   3. Composed of juniors, whether younger or a lower standing;
      as, the junior class; of or pertaining to juniors or to a
      junior class. See {Junior}, n., 2.

   4. Belonging to a younger person, or an earlier time of life.

            Our first studies and junior endeavors. -- Sir T.
                                                  Browne.

Junior \Jun"ior\, n.
   1. A younger person.

            His junior she, by thirty years.      -- Byron.

   2. Hence: One of a lower or later standing; specifically, in
      American colleges, one in the third year of his course,
      one in the fourth or final year being designated a senior;
      in some seminaries, one in the first year, in others, one
      in the second year, of a three years' course.

资料来源 : WordNet®

junior
     n 1: term of address for a disrespectful and annoying male; "look
          here, junior, it's none of your business"
     2: a third-year undergraduate
     3: the younger of two men
     4: a son who has the same first name as his father [syn: {Jr},
        {Jnr}]

junior
     adj 1: younger; lower in rank; shorter in length of tenure or
            service [ant: {senior}]
     2: used of the third or next to final year in United States
        high school or college; "the junior class"; "a third-year
        student" [syn: {junior(a)}, {third-year}, {next-to-last}]
     3: including or intended for youthful persons; "a junior sports
        league"; "junior fashions"