Web Definition for RSS
RDF Site Summary, or Rich Site Summary, or Really Simple Syndication – A lightweight XML format for distributing news headlines and other content on the Web.
What is RSS?
Basically, Really Simple Syndication (or RSS for short) is a lightweight format designed for sharing headlines and other Web content. Think of it as a distributable and easily accessible "What's New Page" or "Summary Page" for a website.
RSS Feed pages are very simple & straight forward in their display. This is to show the viewer a clear & uncluttered list of news feeds or website updates.
The image below shows a typical RSS Feed page
How To Access an RSS Feed Page
If a website has an RSS page available, a 'RSS' button will be displayed in the browser address window. An example can be seen in the image below:

Click on the RSS link in the browser address window & the RSS Feed page will drop down into the browser window. Click the RSS button again to return back to the website page.
RSS Feed Readers