Lewis & Short

pĕtulcus, a, um, adj. [peto; cf. petulans init.], butting, apt to butt, with the horns or head (poet. and post-Aug.).

  1. I. Lit.: agni, Lucr. 2, 368: haedi, Verg. G. 4, 10: caper velaries, Col. 7, 3, 5.
  2. II. Transf., frisky, wanton: haedi petulci dicti ab appetendo: unde et meretrices petulcas vocamus, Serv. Verg. G. 4, 10.