Update

Ring: A circular doubly linked list.

Ring: One ring to rule them all, One ring to find them, One ring to bring them all, And in the darkness bind them. The LOTR chant.

Ring: A field without multiplicative inverses. eg. Integers form a commutative ring.

Ring: A science fiction novel by Stephen Baxter. I encountered the idea of the world-as-a-flying-spaceship here first.

This list can be extended, but that is not the point. In human affairs there is a ring which is more concrete, more fundamental and more far reaching; it made its appearance today. In a small, happy, family function Zarin and me were engaged. The life is entering a new phase and let me add that I am not unaware of, in addition to the happiness, the responsibility this represents. Like all new things this will take some getting used to, the first I can point to is typing with an actual ring in the ring finger.