A hose bib is the small faucet attachment on an outer wall of your home that facilitates your access to water in your backyard, driveway and the likes. As the name implies, this is the small tap that functions as an attachment to your garden hose, giving you easy access to water outdoors. Hose bibs disguise themselves under various names depending on who you ask - sometimes a sill cock, sometimes an outdoor water faucet or even a spigot - but they all refer to the same water mechanism attached to the outside of your home.
Your hose bib connects directly to the plumbing system in your home. All the faucets in your home are attached to your plumbing system through a series of smaller pipes - your hose bib is no different. Because it’s outdoors, however, it does require different maintenance (especially once the cold hits) than your indoor water access points.