Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

Perperna or Perpenna, ae, m., a Roman surname. A famous person of this name was M. Perperna, the murderer of Sertorius, who was defeated by Pompey, Liv. 44, 27, 11; id. Epit. 96; Vell. 2, 30, 1; Flor. 2, 20, 6.
Form Perpenna, Nep. Cat. 1, 1; Tac. A. 3, 62; Just. 36, 4, 9.