the collection of sacred writings of the Christian religion, comprising the Old and New Testaments.
Also calledthe collection of sacred writings of the Jewish religion: known to Christians as the Old Testament.
(often l.c.) the sacred writings of any religion.
(l.c.) any book, reference work, periodical, etc., accepted as authoritative, informative, or reliable: He regarded that particular bird book as the birdwatchers' bible.