Bon

from The Collaborative International Dictionary of English v.0.48

Bon \Bon\, a. [F., fr. L. bonus.]
   Good; valid as security for something.
   [1913 Webster]

from The Free On-line Dictionary of Computing (8 July 2008)

bon

   <language> (From "Bonnie", {Ken Thompson}'s wife) A language
   designed by {Ken Thompson} and later revised by him to produce
   {B}.

   [When?  Features?]

   (1997-02-04)