Answer Description
Spotlight is an application built into Mac OSX to allow for quick searching of files, applications, system preferences and integration with some search engines.
Wikipedia
Spotlight is a system-wide desktop search feature of Apple's macOS and iOS operating systems Spotlight is a selection-based search system, which creates an index of all items and files on the system It is designed to allow the user to quickly locate a wide variety of items on the computer, including documents, pictures, music, applications, and System Preferences In addition, specific words in documents and in web pages in a web browser's history or bookmarks can be searched It also allows the user to narrow down searches with creation dates, modification dates, sizes, types and other attributes Spotlight also offers quick access to definitions from the built-in New Oxford American Dictionary and to calculator functionality
Spotlight_(software) - Wikipedia, the free encyclopedia