2.NounThe part of life following childhood; the period of existence preceding maturity or age; the whole early part of life, from childhood, or, sometimes, from infancy, to adulthood.
"Make the most of your youth, it will not last forever.; I made many mistakes in my youth, but learned from them all."
3.NounA young person.
"There was a group of youths hanging around the parking lot, reading fashion magazines and listening to music."
4.NounA young man; a male adolescent or young adult.