Definition of great book in US English:

great book

noun

historical
  • 1A book of financial accounts, a ledger.

  • 2Specifically. A ledger containing a list of the creditors of some continental European states, originally that instituted in France in 1793. Usually more fully "great book of (the) public debt".

  • 3US. In plural (usually with capital initials). The body of literary works traditionally regarded as the most important or significant in (especially Western) literature; the canon; frequently attributive, designating a curriculum, etc., emphasizing the study of these works.

Origin

Early 17th century. From great + book.

Pronunciation

great book

/ˌɡreɪt ˈbʊk/