a child or descendant of a powerful, wealthy, or aristocratic family, who benefits from their influence/advantages and who is heir to their fortune;
e.g. She is the spoiled scion of a wealthy businessman.
(noun)
a living portion of a plant, such as a twig or shoot, that is detached and joined to a stock in a grafting process and that forms the aerial portion of the grafted individual;
e.g. They used a scion of this species of fruit tree, because it has a high yield.