friend

/fɹɛnd/

noun

1
A person other than a family member, spouse or lover whose company one enjoys and towards whom one feels affection.
“John and I have been friends ever since we were roommates at college. Trust is important between friends. I used to find it hard to make friends when I was shy.”
2
An associate who provides assistance.
“The Automobile Association is every motorist's friend. The police is every law-abiding citizen's friend.”
3
A person with whom one is vaguely or indirectly acquainted.
“a friend of a friend; I added him as a friend on Facebook, but I hardly know him.”
4
A person who backs or supports something.
“I’m not a friend of cheap wine.”
5
An object or idea that can be used for good.
“Wiktionary is your friend.”
6
(used only in the vocative) Used as a form of address when warning someone.
“You’d better watch it, friend.”
7
A function or class granted special access to the private and protected members of another class.
8
A spring-loaded camming device.
9
A lover; a boyfriend or girlfriend.
10
A relative, a relation by blood or marriage.
“Friends agree best at a distance.”

1
To act as a friend to, to befriend; to be friendly to, to help.
2
To add (a person) to a list of friends on a social networking site; to officially designate (someone) as a friend.