Ancestor

[Jason Yan]

One from whom a person is descended, whether on the
fathers or mothers side, at any distance of time; a progenitor; a
fore father.

[Oralee]

A person, typically one more remote than a grandparent, from whom one is descended.

[Michiko]

[Ancestor] is [defined] recursively as your:
1, Parents, AND
2, Your [parents] ancestors.

[PussyCat]

A word for friend to be used informally and colloquially, in the same way that [mate] or dude are.

Also the [plural] can be used to [address] a larger group of friends, in the same way as guys can.