PEST Copy link • PESTA destructive person or thing, pestis; pernicies; pestis ac pernicies (☞ not lues, or vomica): he is the pest of the youth, pestis est adolescentium. A pestilence, Vid: PEST-HOUSE, *aedificium ad pestilentiae contagia prohibenda exstructum (Pliny has pestilentiae contagia prohibere; 23, 8, 80).