1. 
   Yantra
   Yantra (यन्त्र) is the Sanskrit word for "instrument" or "machine". Much like the word "instrument" itself, it can stand for symbols, processes, automata, machinery or anything that has structure and organization, depending on context. One usage popular in the west is as symbols or geom...
   Found op http://en.wikipedia.org/wiki/Yantra
   
   
2. 
   yantra
   in Tantric Hinduism and Vajrayana, or Tantric Buddhism, a linear diagram used as a support for ritual. In its more elaborate and pictorial form it is ... [4 related articles]
   Found op http://www.britannica.com/eb/a-z/y/4
   
   
3. 
   Yantra
   [river] The Yantra (Янтра) is a river in northern Bulgaria, a right tributary of the Danube. It is 285 km long (the third longest Bulgarian tributary of the Danube) and has a watershed of 7,862 km². The Yantra has its source from the northern foot of Hadzhi Dimitar Peak in Central Star...
   Found op http://en.wikipedia.org/wiki/Yantra_(river)
   
   

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