I came across a strange word in the children's book I am currently
> reading. I am on the fourth of a series of six books, starting with
> "The Magician's Nephew", written by C.S Lewis and telling the story of
> four children in Narnia. I am currently reading "Prince Caspian" and
> in the book I came across the word "bivouacked". I can't remember in
> what context the word was used, or if Mr Lewis made it up using poetic
> licence! Can you help?