Well, when you're searching over there (Google search) for something, you receive not only a list of search results (SERP), but also an informational box (at the top of the page) that displays a quick answer to your search/question (or a description of your search term). This featured snippet is part of Google's Rich Answer Box (which has been around a while, but is now becoming more prominent for quick answers, event listings, recipes, maps, and so on. So, now you know.