Mass-Book is a 9 letter English word. It's valid Scrabble word worth 6 points. It's valid Words with friends word worth 7 points.
You can make 172 anagrams from letters in mass-book (-abkmooss).
Middle English word dating back to 1150-1200
"Ay; and from the writings of the fathers, and the Mass book," added the boy.
If they have fed the poor, they have framed the Mass book and the Confessional.
6
7