RSS is the acronym for several things:
Rich Site Summary
Real Simple Syndication
RDF Site Summary
In a nutshell, RSS is the syndicated content from a web site.
It can consist of both the direct content itself, as well as the metadata
(or, information about the information -- much like a library
catalog record!).
RSS uses XML formatting to create RSS feeds.
Therefore,
You will want to use a news reader (or aggregator)
to translate the content of an RSS file, because the RSS Feed is basically
tags and endtags -- much like an HTML document.
An example of
an RSS text file...
Source: Hammersley, Ben. Content Syndication
with RSS.
Farnham: O'Reilly, 2003: 1.