'Commonplace book' definitions:

Definition of 'commonplace book'

From: WordNet
noun
A notebook in which you enter memorabilia

Definition of 'Commonplace book'

From: GCIDE
  • Commonplace \Com"mon*place`\, n.
  • 1. An idea or expression wanting originality or interest; a trite or customary remark; a platitude. [1913 Webster]
  • 2. A memorandum; something to be frequently consulted or referred to. [1913 Webster]
  • Whatever, in my reading, occurs concerning this our fellow creature, I do never fail to set it down by way of commonplace. --Swift. [1913 Webster]
  • Commonplace book, a book in which records are made of things to be remembered. [1913 Webster]