EDIT Symbol of the Sikh religion The Adi Shakti is the symbol of the Sikh religion and shows four of its basic Elements. It is traditionally worn on the turban for celebrations.
The symbol is made up of four symbolic weapons. The symbol derives its name from the middle weapon, the khanda. The khanda is a double-edged sword that separates truth from falsehood with its sharp edges and symbolizies the divine knowledge and omnipotence.
The circle around the khanda is the chakar, a quoit that is an unbrocen circle and thus represents the perfektion of the eternal god.
The chakar is surrounded by two curved swords kalled kirpans. Their names are Meeri and Peeri like the two weapons of the guru Hargobind. They stand for temporal and spiritual power and represent the concept that a Sikh is just as responsible for the society he lives in as he is for his spiritual growth.
A kirpan is one of the things that a sikh has to carry with him at all times out of religious obligation.

Sources:
www.sikhs.org/khanda.htm
http://sukhbirsangha.tripod.com/sikhismnet/id6.html
http://en.wikipedia.org/wiki/Kirpan

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EDIT Synonym Gurmukhi khanda

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