1. 
   BUF
   Buffer
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
2. 
   Buf
   stock type Buffet (1930s express), all withdrawn
   Found op http://www.southernelectric.org.uk/features/segglossary.html
   
   
3. 
   buf
   1) Abbreviation for b-52 bomber
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/buf/1
   
   

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