Ecclesiastes
noun
Ec·cle·si·as·tes i-ˌklē-zē-ˈa-(ˌ)stēz 
e-ˌklē-
: a book of wisdom literature in canonical Jewish and Christian Scripture see Bible Table
Word History
Etymology
borrowed from Late Latin Ecclēsiastēs, borrowed from Greek Ekklēsiastḗs, from ekklēsiastḗs "participant in an assembly of citizens" (adapted by the Septuagint translators as a rendering of Hebrew qōheleth, named in the title verse as the author of the Biblical book), from ekklēsiázein "to hold a public assembly, be a member of the assembly" (verbal derivative of ekklēsía "assembly of citizens") + -tēs, agent suffix — more at ecclesial
First Known Use
14th century, in the meaning defined above