Oldest means older than anyone else. If you use it in a family for instance, you could say oldest child, or oldest cousin/grandchild... so that would be the child of a specific set of parents who was born first, or the first grandchild of a specific set of grandparents that was born first.
I don't know what you mean by oldest, if you mean age or the longest. Longest serving manager is Arsene Wenger, the oldest is the same.
It means it is the oldest religion worshipping a single (mono) god.
That it is upon this Continent that the oldest fossils or other geological specimens are found.
I don't know what you mean by oldest; there was ancient Olympic games that had "sports" way before football
Caarlisle Cullen is oldest, then Esme, Jasper Whitlock, Emmett, Rosalie, Alice, Edawrd
Translation: This is my oldest son
They may be jealous of them.
its vince but if you mean wrestler its finlay
The reason why moms may be mean to the oldest child because the might feel that the younger child needs a bit more help or attention.
It means oldest first and newest last.
One of the oldest known dinosaurs; late Triassic; cannibalistic.
So far as I know, the oldest monument (if by "New World" you mean the US) is a school house in St Augustine, Florida.