Definition - What does Bindu mean?
Bindu is a Sanskrit term meaning “point” or “dot.” In Indian philosophy and religion, bindu has several related connotations, but is usually considered the point from which creation begins and where it is ultimately unified. The feminine case of the word is bindi, which denotes a small ornamental, devotional dot affixed to the forehead in Hinduism. Sometimes this bindi dot is considered to represent bindu, the point of Consciousness from which the universe originates.
In Tantra, bindu symbolizes Lord Shiva, who is the source of creation. Bindu can also denote the silent point that is the source of all sacred sound. Most yantras and mandalas – both ritual designs, often circular or geometric – have the bindu at their center.
Yogapedia explains Bindu
Bindu is sometimes referred to as a type of consciousness or the transition point into pure consciousness. Bindu is the internal point of convergence of the yogic practices of meditation, mantra, contemplation and prayer. At the individual level, experiencing bindu and then transcending it leads to enlightenment, or unity with the higher Self. At the universal level, all existence originates from bindu and will return to bindu when physical life ends.
Although not one of the seven main chakras, the bindu chakra is important in Tantra yoga for its healing properties. This chakra lies at the back of the head about five inches from the top of the skull. When this chakra is not activated, it is similar to a dot, but when charged, the bindu chakra energy of vitality and health begins to flow. In the Tantric tradition, bindu chakra is thought to hold a special nectar (amrit) that helps the practitioner reach enlightment. Both shoulder stand pose and headstand pose are yoga postures that open the bindu chakra.