1. 
   glass wool
   [n] - glass fibers spun and massed into bundles resembling wool
   Found op http://www.webdictionary.co.uk/definition.php?query=glass%20wool
   
   
2. 
   glass wool
   (from the article `fibreglass`) Fibreglass wool, an excellent sound and thermal insulator, is commonly used in buildings, appliances, and plumbing. Glass filaments and yarns add ...
   Found op http://www.britannica.com/eb/a-z/g/36
   
   
3. 
   Glass wool
   Glass wool (UK) or fiberglass insulation (US) is an insulating material made from fiberglass, arranged into a texture similar to wool. Glass wool is produced in rolls or in slabs, with different thermal and mechanical properties. ==Manufacturing process== After the fusion of a mixture of natural sa...
   Found op http://en.wikipedia.org/wiki/Glass_wool
   
   
4. 
   glasswool
   1) Insulation material
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/glasswool/1
   
   

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