Lewis & Short

pantex, ĭcis, and usu. plur., pantĭces, um, m., the paunch, the bowels (syn.: venter, ilia): eo vos vostrosque pantices madefacitis, quom ego sim hic siccus, Plaut. Ps. 1, 2, 50: et aestuantes docte solvis pantices, i. e. sausages, Verg. Cat. 5, 31; Mart. 6, 64, 28.
In sing., Auct. Priap. 83, 19 dub.