1. 
   Eprouvette
   An Eprouvette is a one piece, fixed elevation mortar used to test the strength of gunpowder. It went out of general use by the middle of the 19th century. In use, a carefully weighed quantity of powder (charge) was placed inside, followed by a standard weight shot. The charge was fired and the dist...
   Found op http://en.wikipedia.org/wiki/Eprouvette
   
   
2. 
   Éprouvette
   É`prou`vette' noun [ French] (Gun.) An apparatus for testing or proving the strength of gunpowder.
   Found op http://www.encyclo.co.uk/webster/É/58
   
   
3. 
   Eprouvette
   • (n.) An apparatus for testing or proving the strength of gunpowder.
   Found op http://thinkexist.com/dictionary/meaning/eprouvette/
   
   
4. 
   Eprouvette
   Eprouvette was the name of an instrument for ascertaining the strength of gunpowder, or of comparing the strength of different kinds of gunpowder.
   Found op http://www.probertencyclopaedia.com/browse/GE.HTM
   
   

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