1. 
   FN
   Fabrique Nationale a'Armes d G Herstal (Belgium)
   Found op http://www.tea-and-medals.co.uk/glossary.htm
   
   
2. 
   FN
   Aviation acronym: Flight Navigator
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
3. 
   FN
   Defence manufacturer [BE]
   Found op http://www.jedsite.info/index.html
   
   
4. 
   FN
   [motorcycle] FN (Fabrique Nationale de Herstal) was a Belgian company established in 1899 to make arms and ammunition, and from 1901 to 1967 was also a motorcycle manufacturer. FN manufactured the world`s first four-cylinder motorcycle, was famous for the use of shaft drive in all models fro...
   Found op http://en.wikipedia.org/wiki/FN_(motorcycle)
   
   
5. 
   fn
   1) Curves
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/fn/1
   
   

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