It is a poetic and evocative phrase that can be interpreted in many ways, depending on the context. Here are a few possible interpretations:
* Between physical realms: It could refer to the space between the world of the living and the world of the dead, or between different dimensions or realities.
* Between states of being: It could refer to the transition between sleep and wakefulness, childhood and adulthood, or any other significant change in a person's life.
* Between cultures or perspectives: It could represent the space where different cultures or ways of thinking meet and interact.
The meaning of "inter mundos" is ultimately up to the individual to interpret. However, it always carries with it a sense of mystery, transition, and the possibility of something new and different.