[1] : The Collaborative International Dictionary of English v.0.48

billfold \bill"fold`\ bi^l" f=old`,
   a small, thin, flat container, usually made of leather or
   imitation leather, having a pocket of a size just large
   enough to hold paper currency and folded over once to fit in
   the pocket of one's clothing; it is a type of wallet, but
   having fewer compartments than the typical wallet.
   pjc

[2] : WordNet (r) 2.0

billfold
     n : a pocket-size case for holding papers and paper money syn:
         wallet, notecase, pocketbook
see also:
wallet notecase pocketbook 

Billfold >> B Words
Billfold, definition of term: Billfold
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