1. 
   Rockfoil
   (Saxifraga) Saxifraga is a large group of hardy perennial plants. Only a few are annuals or biennials. They are mostly natives of North and South Temperate and Arctic regions. A few are found in Asia and they are rare in South America. The name is an old Latin name derived from saxum, a rock ...
   Found op http://www.botany.com/saxifraga.html
   
   
2. 
   rockfoil
   rockfoil: see saxifrage.
   Found op http://www.infoplease.com/ce6/sci/A0918200.html
   
   
3. 
   rockfoil
   1) Breakstone 2) Herb 3) Herbaceous plant 4) Saxifrage
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/rockfoil/1
   
   

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