Scholar (noun)

1. A person who has studied a particular subject or field extensively, typically to graduate level or above.
2. A person who is an authority on a particular subject or field.
3. A person who has been awarded a scholarship or a grant for advanced study.

Origin:

Middle english: from old french scholar, from latin scholaris, from schola "school".

Examples:

1. He is a renowned scholar in the field of ancient history.
2. The scholarship will help her become a scholar in her chosen field.
3. The young scholar impressed the audience with his research.