Definitions of Friend:

• noun:   a member of the Religious Society of Friends founded by George Fox (the Friends have never called themselves Quakers)
• noun:   a person you know well and regard with affection and trust

  Example: "He was my best friend at the university"

• noun:   a person with whom you are acquainted

  Example: "We are friends of the family"

• noun:   an associate who provides assistance

  Example: "They were friends of the workers"

• noun:   a person who backs a politician or a team etc.

  Example: "They are friends of the library"

• name:  A surname (common: 1 in 14285 families; popularity rank in the U.S.: #1930)