As strange as it sounds, the Multiverse was actually given a unique name in Arghard ages ago. That name is Rosen Lauris Magnus, or, the Great Rose. Some merely refer to the Multiverse as Rose. The source of the name is unknown though several theories exist about its origins. One of these theories attributes it to the Draconian Brotherhood, while another to elven magicians. Regardless, to some extent there is logic in naming the Multiverse after a flower, for each separate world within the Multiverse may be referred to as the petal of a flower. A crude description, perhaps, but one that is easy to understand, similar to an ancient depiction of the Multiverse which symbolizes Material Planes by stars in a rainbow colored mist which symbolizes the Spiritual Planes.
 - Excerpt from the treatise entitled Arghard and the Multiverse, written by the orc mage Azrahl roughly two centuries before Twilightfall