Wikipedia:Redirect - Wikipedia
A redirect is a page that automatically sends visitors to another page, usually an article or section of an article. For example, if you type "UK" in the search box or click on the wikilink UK, you will be taken to the article United Kingdom with a note at the top of the page (or on mobile, in a black message bar at the bottom): "(Redirected from UK)". This is because the page UK contains special wikitext that defines it as a redirect page and indicates the target article. It is also possible to redirect to a specific section of the target page, using more advanced syntax.