n. One who is younger, or of inferior rank; a junior; esp., a judge of inferior rank. [ 1913 Webster ]
It were not a work for puisnes and novices. Bp. Hall. [ 1913 Webster ]
a. [ See Puny. ] 1. Later in age, time, etc.; subsequent. [ Obs. ] “ A puisne date to eternity.” Sir M. Hale. [ 1913 Webster ]
2. Puny; petty; unskilled. [ Obs. ] [ 1913 Webster ]
3. (Law) 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. Blackstone. [ 1913 Webster ]