Wiki (noun)

1. A website or database that allows users to add, modify, or delete its content via a web browser.
2. A type of website that allows users to easily add and edit content, typically using a simplified markup language or a rich-text editor.

Origin:

Hawaiian word "wiki" meaning "quick" or "fast", coined by ward cunningham in 1994 as the name of a collaborative website software he created.

Examples:

1. Wikipedia is the most well-known example of a wiki.
2. The company's intranet is based on a wiki software, allowing employees to share and update information.
3. The project used a wiki to document its progress and gather feedback from team members.
4. The open-source community uses a wiki to track bugs and feature requests.
5. The online encyclopedia is a wiki that anyone can edit.