1. 
   Rifling
   Ri'fling noun (a) The act or process of making the grooves in a rifled cannon or gun barrel. (b) The system of grooves in a rifled gun barrel or cannon. Shunt rifling , rifling for cannon, in which one side of the groove is m...
   Found op http://www.encyclo.co.uk/webster/R/81
   
   
2. 
   Rifling
   • (p. pr. & vb. n.) of Rifle • (n.) The system of grooves in a rifled gun barrel or cannon. • (n.) The act or process of making the grooves in a rifled cannon or gun barrel.
   Found op http://thinkexist.com/dictionary/meaning/rifling/
   
   
3. 
   rifling
   (from the article `small arm`) As killing machines, smoothbore infantry muskets were relatively inefficient. Their heavy, round lead balls delivered bone-crushing and ...
   Found op http://www.britannica.com/eb/a-z/r/49
   
   
4. 
   Rifling
   Rifling is the process of making helical grooves in the barrel of a gun or firearm, which imparts a spin to a projectile around its long axis. This spin serves to gyroscopically stabilize the projectile, improving its aerodynamic stability and accuracy. Rifling is often described by its twist rate,...
   Found op http://en.wikipedia.org/wiki/Rifling
   
   
5. 
   Rifling
   In firearms, rifling is the name given to the spiral grooves cut in the face of the bore of the barrel of some weapons. Rifling imparts spin to the projectile, which provides gyroscopic stability to the projectile in flight, and thus improves accuracy.
   Found op http://www.probertencyclopaedia.com/browse/FR.HTM
   
   
6. 
   rifling
   Helical grooves in the barrel of a gun or firearm, which imparts a spin to a projectile around its long axis. This spin serves to gyroscopically stabilize the projectile, improving its aerodynamic stability and accuracy.
   Found op http://en.wikipedia.org/wiki/Glossary_of_firearms_terms
   
   
7. 
   rifling
   1) Formation 2) Grooving 3) Searching through someone's stuff 4) Shaping
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/rifling/1
   
   

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