πυρά
πυρά
watch-fires, mostly in acc., καίωμεν πυρὰ πολλά Il.; πυρὰ ἐκκαίειν Hdt.:— beacon-fires, Thuc.: — ἄτιμος ἐν πυροῖσι, of sacrificial fires, Aesch.
The accent, as well as the dat. πυροῖς, shews that it does not belong to πῦρ.