http://dictionary.reference.com/browse/Bible
Bi⋅ble
/ˈbaɪbəl/ Show Spelled Pronunciation [bahy-buhl] Show IPA Pronunciation
–noun
4. (lowercase) any book, reference work, periodical, etc., accepted as authoritative, informative, or reliable: He regarded that particular bird book as the birdwatchers' bible.
Not saying that the TPWW Bible isn't of Biblical proportions, of course.