thas´ı̄\Language:English} (Codex Venetus ΘασσειÌ, ThasseıÌ; Codex Vaticanus ΘασσιÌÏ‚, ThassıÌs): The surname of Simon, the brother of Judas Maccabeus (1 Macc 2:3; Syriac “Tharsiâ€). It is uncertain what the name means, perhaps “director†or “guide,†since Simon was “a man of counsel,†or “the zealous.â€