Noun
an Apocryphal book consisting of a compilation from I Chronicles and II Chronicles and Ezra and Nehemiah
Source: WordNetThe canonical Ezra-Nehemiah is known in the Septuagint as "Esdras B", and 1 Esdras is "Esdras A". 1 Esdras is a very similar text to the books of Ezra-Nehemiah, and the two are widely thought by scholars to be derived from the same original text. Source: Internet