Puis″ne (pū″ny̆), a. [See Puny.] 1. Later in age, time, etc.; subsequent. “ A puisne date to eternity.” Sir M. Hale.
2. Puny; petty; unskilled.
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.