Lewis & Short

fulgŭrātor, ōris, m. [fulgur].

  1. I. A priest who interprets and propitiates lightning, a lightning-interpreter: fulguratores, ut extispices et haruspices, ita hi fulgurum inspectores. Cato de moribus Claudii Neronis: haruspicem, fulguratorem si quis adducat, Non. 63, 21 sq.; Cic. Div. 2, 53, 109.
    Also written ‡ fulguriator, Inscr. Orell. 2301.
  2. II. A lightning-hurler, App. de Mundo; Inscr. Grut. 21, 5; also written ‡ fulgerator, ib. 3; 4; Don. cl. 1, 1.