Macs and OS X Glossary: S
Safari: The Mac’s Web browser.
sidebar: The pane on the far left of the Finder window. It contains your network, hard disk, home folder, applications, documents, movies, and more.
Smart Groups: A way to group contacts in your Address Book.
Smart Mailboxes: Searches for e-mail that matches specific search criteria.
Spotlight: The Mac’s search technology.
start-up disk: The boot drive that contains the Mac OS X system you’re using at the moment