Generally, a term signifying a circle or sphere beyond which something unprepared or undesirable cannot pass. For example, an area that has been banished and consecrated as a magickal workspace is, at its edge, a ring-pass-not.

On a spiritual level, if you believe that you are separate from others and alternate levels of existence, a ring-pass-not contains your consciousness and prevents other things from getting in. As you spiritually evolve, and the seeming separations fade away, the ring-pass-not extends, allowing the mind to accept more and more. This is sometimes called the “unfolding of consciousness.”