Glossary contains the meanings and definitions of the industry jargon newbies have tough time to understand. Click on the plus (+) sign to find the definition.
Permalink is the link structure of a webpage, the URL of a webpage can be changed when setting up a website but has to be permanent in nature because it is a link people will follow to land on the respective pages. In WordPress, the default permalinks are something like this, http://yoursite.com/?p=344 which can be changed to different sets like
http://yoursite.com/published date/post title/ which looks like http://yoursite.com/2014/2/what-is-blogging/
http://yoursite/post title/ which looks like http://yoursite.com/what-is-blogging/
Here is a guide that can help you.