What is what does mutual friend mean on facebook?

A mutual friend on Facebook is a person who is friends with two or more other users on the social media platform. When someone visits another user's profile, they may see the names of mutual friends. Mutual friends are often used as a way to make new connections on Facebook or to confirm a person's identity. However, it is important to remember that simply having mutual friends with someone doesn't necessarily mean that they are trustworthy or a good person, so it is always wise to exercise caution when interacting with people online.