Source : Webster's Revised Unabridged Dictionary (1913)

Ecclesiasticus \Ec*cle`si*as"ti*cus\, n. [L.]
   A book of the Apocrypha.

Source : WordNet®

Ecclesiasticus
     n : an Apocryphal book mainly of maxims (resembling Proverbs in
         that respect) [syn: {Ben Sira}, {Sirach}, {Wisdom of
         Jesus the Son of Sirach}]