An immature, naïve or inexperienced person.
A young bird which has just developed its flight feathers (notably wings).
An insect that has just fledged, i.e. undergone its final moult to become an adult or imago.
Emergent or rising.
Untried or inexperienced.
The youngest member of any company or organization.
The youngest child of a family.
Born last in a family; youngest in a the family.
Younger than anyone else in a group.