"Stripling" is an alternative word for a youth. According to the Cambridge Dictionary:
stripling noun [ C ] /ˈstrɪp.lɪŋ/
old-fashioned or humorous
a young man.
It is derived from the use of the word "strip" as a description for something slim or narrow.
I used the word in an essay for publication recently and was surprised when my well-educated US proofreader confessed himself ignorant of its meaning. It's a little archaic but I think most British speakers would be familiar with it.
Is it a word that's absent from US English?