any instrument or machine

• 
  
• 
  
• 
  
• 
  
• 
  
• 
  
• 
  
• 
  
• 
  
• 
  
• 
  
• 
  
• 
  
• 
  
• 
  
• 
  
• 
  
• 
  
• 
  
• 
  
• 
  
• "any instrument or machine" (i.e. that which is controlled or controls. For instance the body is said to be a yantra^[5])
• "any instrument for holding, restraining, or fastening" (for instance a symbol which 'holds' the essence of a concept, or helps the mind to 'fasten' on a particular idea)
• "a mystical or astronomical diagram" (usually a symbol, often inscribed on an amulet) sometimes said to possess mystical or magical powers.

sri yantra