Oracle (noun)

1. A person, typically a priestess, through whom a god was held to speak.
2. A person regarded as a source of wise counsel or prophetic opinion.

Origin:

Late middle english: from old french oracle, from latin oraculum, from orare "speak, pray".

Examples:

1. In ancient Greece, people would consult the oracle at Delphi to ask for guidance.
2. The oracle's predictions were always shrouded in mystery and metaphor.
3. Many people believe the oracle had a supernatural ability to predict the future.
4. In the IT industry, Oracle is a company that makes and sells databases.
5. He was considered an oracle of wisdom among his colleagues.