Schoolboy (noun)

1. A boy who is attending school or is of school age.
2. An inexperienced or immature person, especially a young man.

Origin:

Derived from the middle english word 'scoleboy' meaning a boy who attends school.

Examples:

1. The schoolboys were excited to start their first day of high school.
2. The schoolboy was known for his mischievous pranks.
3. He was scolded by his teacher for his schoolboy mistakes.
4. The schoolboy's school uniform consisted of a white shirt, navy pants and a red tie.
5. The schoolboy was caught passing notes in class.