Lewis & Short

căvillātor (caulāt-, Plaut. Truc. 3, 2, 13), ōris, m. [cavillor],

  1. I. a jester, jeerer, caviller: facetus, Plaut. Mil. 3, 1, 46: probus, id. Truc. 3, 2, 15; * Cic. Att. 1, 13, 2; Gell. 4, 20, 3.
  2. II. Meton., a sophist, Sen. Ep. 102, 20.