What does it mean to be family?

Someone I consider to be family would have to be my mom. Because shes been there my whole life and watched me grow up. My mom is like my best friend, her name is Hollie we do everything together, we go shopping together, we watch tv together, we play games on the xbox together. I also consider my mom to be my best friend is because she understands me more than my dad does and she knows what I go through all the time.