The Collaborative International Dictionary
Puisny
Puisny \Puis"ny\, a. Puisne; younger; inferior; petty; unskilled. [R.]
A puisny tilter, that spurs his horse but on one side.
--Shak.
Wiktionary
puisny
a. (context obsolete English) puisne; younger; inferior; petty; unskilled