Source (noun)

1. A place, person, or thing from which something comes, arises, or is obtained.
2. An origin or beginning of something.
3. A person or organization that provides or supplies something.

Origin:

The word 'source' comes from the latin word 'fontis', which means 'a spring'. it was first used in the english language in the early 14th century as a noun meaning 'a spring or fountain'.

Examples:

1. The source of the Nile is a lake in Uganda.
2. The source of inspiration for the artist's latest masterpiece is a dream he had.
3. A new source of renewable energy has been discovered.
4. The source of the leak has yet to be determined.
5. She's a reliable source of information on current events.