BINDU

Bindu literally means a drop or a point.  It is sometimes likened to a pearl or a seed.  A standard religious symbol throughout the world, it often is found in the center of a yantra or a mandala representing a cosmic axis. 

The bindu is an all-pervading spatial concept, the limit of manifestation.  When something exists yet does not exist, it is represented by the bindu. When the universe collapses into dissolution, it culminates into a point--bindu--ultimately to re-form from it.

There is a stage of yoga meditation in which all experiences collapse into a point from which all experiences arose in the first place.  From there, from that bindu, one travels beyond or transcends the mind and its content, finishing at the doorway to the Absolute.