Collective Noun:

All of your friends

One who has a mania for music.

plural for "you"

Second Person Plural.
A grammatical necessity which is sadly lacking in the English Language.
French has "vous" (informal and formal)
and German has "ihr" (informal) and Sie (formal).

The southern USA version is "you all"

(Australian) Of Bogan origins.
Plural of You. Referring to a more that one person. The pinnacle of ignorant grammar.

Non-bogans think this term is hilarious, especially when used by a bogan or by another non-bogan imitating a bogan.

Bogans can't spell this word, known variations are: Yous, You's (the reason for apostrophe usage is yet to be discovered depite teams of scholars devoting their efforts)

pronoun: south philly term refering to several people.

Australian slang generally used to address more than one person. Arty farty and high brow types get annoyed when you use this word in their company.