πυέλος

From LSJ

πληγέντες αὐτόχειρι σὺν μιάσματι → brothers smitten by mutual slaughter

Source

Middle Liddell

πυέλος, ἡ,
an oblong trough, for feeding animals, Od.: a bathing-tub, Ar.:— a vat, kitchen-boiler, Ar.