The Collaborative International Dictionary
Bibliothecary
Bibliothecary \Bib`li*oth"e*ca*ry\, n. [L. bibliothecarius: cf.
F. biblioth['e]caire.]
A librarian. [Obs.]
--Evelin.
Douglas Harper's Etymology Dictionary
bibliothecary
"librarian," 1610s, from Latin bibliothecarius, from bibliotheca (see bibliothek). An earlier form in English was bibliothecar (1580s).
Wiktionary
bibliothecary
n. (context obsolete English) A librarian.