Welcome to the Voice of America's "News Words," where we teach you about words in the news. When the George W. Bush Presidential Library opened in Texas, all of the living US presidents - past and present - gathered for the ceremony. One of the things that the presidential library's opening demonstrates in many ways is an end to the administration.
This is really the last thing he is going to do as president of this administration of this group of people. The word "presidential" means having to do with a president. Presidential libraries hold the official papers from a president's administration. Presidential elections are when voters choose a president, often a nation's top public official. Now, when you hear the word "presidential," your English will be good enough to know what this News Word means.