htaccess URL redirection - Want to remove a word from URL

htaccess URL redirection - Want to remove a word from URL

I want to redirect some URLs to different URL. For instance
http://www.mydomain.com/some-text-2-rss/
http://www.mydomain.com/another-text-rss
http://www.mydomain.com/sample-rss/
http://www.mydomain.com/dummy-content-rss
http://www.mydomain.com/some-folder-1/my-text-rss
http://www.mydomain.com/another-folder/some-text-rss/
TO
http://www.mydomain.com/some-text-2/
http://www.mydomain.com/another-text
http://www.mydomain.com/sample/
http://www.mydomain.com/dummy-content
http://www.mydomain.com/some-folder-1/my-text
http://www.mydomain.com/another-folder/some-text/
i.e if any URL's ending is '-rss' or '-rss/', i want to remove '-rss' from
the URL.
Thanks in Advance.