A person whom one knows and with whom one has a bond of mutual affection, typically exclusive of sexual or family relations. She has been my best friend since childhood.
A person who supports a cause, organization, or country by giving financial or other help. The charity event was attended by many friends of the organization.
A member of the Religious Society of Friends, also known as a Quaker. The Friends gathered for their weekly meeting at the local Quaker house.
A person who is added to one's list of contacts on a social networking website. I have over 500 friends on Instagram.