puisne

a.

  1. Later in age, time, etc.; subsequent.
  2. Puny; petty; unskilled.
  3. Younger or inferior in rank; junior; associate; as, a chief justice and three puisne justices of the Court of Common Pleas; the puisne barons of the Court of Exchequer.

n.

  1. One who is younger, or of inferior rank; a junior; esp., a judge of inferior rank.