Ecclesiasticus
noun
Ec·cle·si·as·ti·cus i-ˌklē-zē-ˈa-sti-kəs 
e-ˌklē-
: a didactic book included in the Protestant Apocrypha and as Sirach in the Roman Catholic canon of the Old Testament
Word History
Etymology
borrowed from Late Latin Ecclēsiasticus, probably short for liber ecclēsiasticus "church book" (from its use in church readings) — more at ecclesiastic entry 1
First Known Use
14th century, in the meaning defined above