Ecclesiasticus n. : A book of the Apocrypha.

Example:
What's the difference between Ecclesiastes and Ecclesiasticus?

Taxonomy
Wisdom of Ben Sira, Wisdom, book of Sirach, Hebrew, Ecclesiasticus, canon, The Wisdom, Wisdom of Jesus, scholars, Texts, manuscripts, messianic, Hebrew texts, free encyclopedia, biblical canon, Greek, grandson, the prophets.

Defination from the web:
Ecclesiasticus closely resembles Proverbs, except that, unlike the latter, it is the work of a single author, not an anthology of maxims drawn from various sources. ... Williams, David Salter (1994) "The Date of Ecclesiasticus" Vetus Testamentum 44(4): pp. 563-566 ...