The noun friend has 5 senses (first 5 from tagged texts)
1. (652) friend -- (a person you know well and regard with affection and trust; "he was my best friend at the university")
2. (74) ally, friend -- (an associate who provides assistance; "he's a good ally in fight"; "they were friends of the workers")
3. (47) acquaintance, friend -- (a person with whom you are acquainted; "I have trouble remembering the names of all my acquaintances"; "we are friends of the family")
4. (34) supporter, protagonist, champion, admirer, booster, friend -- (a person who backs a politician or a team etc.; "all their supporters came out for the game"; "they are friends of the library")
5. (1) Friend, Quaker -- (a member of the Religious Society of Friends founded by George Fox (the Friends have never called themselves Quakers))