instrepo

īn-strepo, puī, pitum, ere, ertönen, ächzen, knirschen, knarren, sub pondere axis instrepat, Verg. georg. 3, 173: non dentibus umquam instrepis horrendum, Claud. Mall. Theod. cons. 223: mit Acc. = ertönen lassen, lamentabiles questus, Apul. met. 2, 27.