a Web site or database developed by a community of users, allowing any user to add and edit content.

A collaborative Web site comprised of the perpetual collective work of many authors. Similar to a blog in structure and logic, a wiki allows anyone to edit, delete or modify content that has been placed on the Web site using a browser interface, including the work of previous authors. In contrast...

A website with information that users can change or add things toFrom Longman Business Dictionarywikiwik‧i /ˈwɪki/ noun.