Lewis & Short

Thrăso, ōnis, m., = Θράσων.

  1. I. The name of a braggart soldier in Terence’s Eunuch; hence, Thrăsōnĭānus, a, um, adj., Thrasonian, i. e. bragging, vainglorious, Sid. Ep. 1, 9 fin.
  2. II. A friend of Hieronymus, king of Syracuse, Liv. 24, 5.