1. 
   Capsquare
   In artillery, capsquares, or capsquires, are strong plates of iron which come over the trunnions of a cannon, keeping it in its carriage. They are fastened by hinges to the paizeplate, so that it could be lifted up and down. They form a part of an arch in the middle, to receive a third part of the ...
   Found op http://en.wikipedia.org/wiki/Capsquare
   
   
2. 
   Capsquare
   Cap'·square noun (Gun.) A metal covering plate which passes over the trunnions of a cannon, and holds it in place.
   Found op http://www.encyclo.co.uk/webster/C/22
   
   
3. 
   Capsquare
   • (n.) A metal covering plate which passes over the trunnions of a cannon, and holds it in place.
   Found op http://thinkexist.com/dictionary/meaning/capsquare/
   
   

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