The other meaning of the term “setting” refers to the head of the ring, the part of the ring anatomy that holds the centre stone. The head is located at the top of the ring. It determines how the stones interact with light and at which angle the centre stone can be seen.
It is worth mentioning that the terms “solitaire setting”, “halo setting”, “cathedral setting”, and others describe the head of the ring, i.e. the way the stones are mounted, rather than the way gems are held.