ἕλκος
From LSJ
ἔξαψις σφοδρὰ μετὰ πολλῆς βίας πίπτουσα ἐπὶ γῆς → a violent flare-up falling on the ground with great force, thunder and lightning
English (LSJ)
εος, τό,
A wound, Il.4.190, al. (never in Od.), Pi.P.2.91, E.Tr. 1232 (pl.), etc. 2 festering wound, sore, ulcer, ἕ. ὕδρου the festering bite of a serpent, Il.2.723; plague-ulcer, Th.2.49, X.Eq.5.1, etc. (Gal. 10.232 defines ἕ. as ἡ τῆς συνεχείας λύσις ἐν σαρκώδει μορίῳ, and both 1.1 and 1.2 are treated in Hp.Ulc.; ἕ. is applied to amputations in Art.68.) II metaph., wound, loss, Sol.4.17, S.Ant.652,al.; ἕ. δήμιον A.Ag.640; ὑποκάρδιον ἕ. Theoc.11.15; γίγνεται ἕ. ἐφ' ἕλκει Lib.Ep.1063.6. (Orig. Ελκος, cf. Lat.ulcus, Skt.árśas (n.) 'haemorrhoid': ἕ- by influence of ἕλκω.)