1. 
   Trepanning
   • (p. pr. & vb. n.) of Trepan
   Found op http://thinkexist.com/dictionary/meaning/trepanning/
   
   
2. 
   trepanning
   (from the article `medicine, history of`) One curious method of providing the disease with means of escape from the body was by making a hole, 2.5 to five centimetres across, in the skull of ...
   Found op http://www.britannica.com/eb/a-z/t/77
   
   
3. 
   Trepanning
   Trepanning, also known as trephination, trephining or making a burr hole, is a surgical intervention in which a hole is drilled or scraped into the human skull, exposing the dura mater in order to treat health problems related to intracranial diseases. It may also refer to any "burr" hole created t...
   Found op http://en.wikipedia.org/wiki/Trepanning
   
   

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