καύσ-τειρᾰ · kaus-teira — LSJ
burning hot, raging, only as Adj. in gen., μάχης καυστείρης Il. 4.342, 12.316; καυστείρης . . καμίνου Nic. Th. 924: accented καυστειρῆς in good codd. of Hom. and Nic.:—later taken to be from καυστειρός, hence καυστειροῖο Opp. H. 2.509 (v.l. καυστηρ- both here and in Nic. l.c.), and perhaps so Call. POxy 2375 ii 2. cf. EM 493.44, Hsch.