βιβλιοφυλάκιον

τό
A. place to keep books in, τὰ βασιλικὰ β. the royal archives, LXX 1 Es. 6.21, 23, PTeb. 318.23 (ii A. D.).
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project