Lewis & Short

per-pŏpŭlor, ātus, 1, v. dep. a., to lay quite waste, ravage, devastate; to plunder or pillage completely: agrum Placentinum, Liv. 34, 56: omnia loca, id. 34, 28: Italiam, id. 22, 3; Tac. A. 14, 26.
Part. perf., in a pass. signif.: perpopulato agro, completely laid waste, Liv. 22, 9, 2.