youngster

noun
UK /ˈjʌŋ.stər/
US /ˈjʌŋ.stɚ/

A youngster is a young person or child.

The youngsters played football in the park after school.


OTHER MEANINGS

2. A young animal, especially a young horse.

The mare stayed close to her youngster in the field.

3. A person who is new or inexperienced in a particular activity or organization.

The senior players helped the youngsters on the team learn the rules.

4. A young sailor or midshipman in the navy.

The youngster was assigned to the ship's navigation crew.