Shiva is often depicted with a third eye with which he burned Desire (Kāma) to ashes. There has been controversy regarding the original meaning of Shiva's name Tryambakam (Sanskrit: त्र्यम्बकम्), which occurs in many scriptural sources. In classical Sanskrit the word ambaka denotes "an eye", and in the Mahabharata Shiva is depicted as three-eyed, so this name is sometimes translated as "Having Three Eyes". However, in Vedic Sanskrit the word ambā or ambikā means "mother", and this early meaning of the word is the basis for the translation "Having Three Mothers" that was used by Max Müller and Arthur Macdonell. Since no story is known in which Shiva had three mothers, E. Washburn Hopkins suggested that the name refers not to three mothers, but to three Mother-goddesses who are collectively called the Ambikās. Other related translations have been "having three wives or sisters", or based on the idea that the name actually refers to the oblations given to Rudra, which according to some traditions were shared with the goddess Ambikā.
http://en.wikipedia.org/wiki/Shiva
