OM is a beautiful word. It has the same roots as the words I AM or AMEN. These words are the sound of the Divine, the All That Is. It is a great mantra for meditation, and it can bring you profound peace.
This word is also on the pendant I'm wearing. It is used to symbolize the Hindu religion. From the top, going clockwise, these are the religions symbolized on my pendant:
Christianity ~ the cross
Taoism ~ yin-yang shows opposites in balance
Islam ~ crescent and star
Judaism ~ six-pointed star
Buddhism ~ eight spokes represent the Eightfold Path
Hinduism ~ the word Om (or Aum)
The Dalai Lama said, "When there is peace among religions,there will be peace in the world."