hidden
·noun ·pl Something, as a writing, that is of doubtful authorship or authority; — formerly used als...
Webster's Dictionary of the English Language
Hidden, spurious, the name given to certain ancient books which found a place in the LXX. and Latin ...
Easton's Bible Dictionary
(concealed, hidden). • Old Testament Apocrypha ._The collection of books to which this term is popu...
William Smith's Bible Dictionary