Definition of sorts: Biting is when someone sinks their teeth into food, someones body, or something else as it can create a mix of pain and pleasure as well as provide an oral sensation.
Biting can be a visceral and fun way to create intimacy and lust with your partners and some people find themselves incredibly into it. Whether its about providing the pain or pleasure, or receiving it, biting various parts of the body anyway from gently to hard can be really enjoyable. It can be fun to bring food in tandem with biting and pleasure too.
But, not to yuck peoples yum, biting is not for everyone for many reasons. As it goes with everything else, it is important to talk with partners about whey they like or dislike the act of biting.