wealth, success, or a prestigious position considered as a goal or prize:
Few of those who reach for the brass ring of the Presidency achieve it.
2.
the opportunity to try for such a prize.
Origin
from the practice of picking a ring from a box while riding a merry-go-round: whoever selected a brass ring received a free ride
Idioms and Phrases with brass ring
brass ring
A chance to achieve wealth or success; a prize or reward. For example, “As a businessman he let the brass ring go by too many times. And it got him.” This quotation from the Boston Globe (July 31, 1995) refers to an executive who was forced to resign. The term comes from the practice of giving a free ride to the person who succeeded in picking a ring out of a box while riding a merry-go-round. [ ; late 1800s ]