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--a 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 the mind and its content, finishing at the Absolute.