1. 
   Jack Saw
   A Jack saw or panel saw is a light hand saw with a narrow, usually slightly tapering, blade of fine teeth, for cutting timber thinly.
   Found op http://www.probertencyclopaedia.com/browse/GJ.HTM
   
   
2. 
   Jacksaw
   Jack'saw` noun (Zoology) The merganser.
   Found op http://www.encyclo.co.uk/webster/J/1
   
   
3. 
   jacksaw
   <zoology> The merganser. ... Source: Websters Dictionary ... (01 Mar 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?jacksaw
   
   
4. 
   Jacksaw
   • (n.) The merganser.
   Found op http://thinkexist.com/dictionary/meaning/jacksaw/
   
   

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