THE FULL ARTICLE — from the International Standard Bible Encyclopedia

The International Standard Bible Encyclopedia (1915), general editor James Orr — public domain, printed whole.

thas'-i (Codex Venetus Thassei; Codex Vaticanus Thassis): The surname of Simon, the brother of Judas Maccabeus (1 Macc 2:3; Syriac "Tharsi"). It is uncertain what the name means, perhaps "director" or "guide," since Simon was "a man of counsel," or "the zealous."