216: bon fire Jul 12, 2015
  The word 'bonfire' comes from late Middle English: bone + fire. The term
 originally denoted a large open-air fire on which bones were burned 
(sometimes as part of a celebration), also one for burning heretics or 
outlawed literature. Johnson accepted the mistaken idea that the word 
came from French 'bon' meaning 'good'. but in recent years, that idea 
has been dispelled.
