What is youth?
youth is (noun) 1. a young man Gangs of youths were causing trouble in the village. A youth, aged 16, was arrested for possessing drugs. 2. a period when you are young, especially the time between being a child and being an adult In his youth he was a great traveller. I haven’t done that since the days of my youth!
source: Easier English, Student Dictionary Upper Intermediate Level