εἶσθα
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)
Ep. 2sg. of εἶμι (ibo), Il.10.450, Od.19.69.
Spanish (DGE)
v. εἶμι.
French (Bailly abrégé)
2ᵉ sg. prés. épq. de εἶμι.
Russian (Dvoretsky)
εἶσθα: эп. (= εἶ) 2 л. sing. praes. к εἶμι.
Greek (Liddell-Scott)
εἶσθα: Αἰολ. καὶ Ἐπ. β΄ ἑνικ. τοῦ εἶμι (πορεύομαι), εἶσθα θοὰς ἐπὶ νῆας Ἀχαιῶν, «ἐλεύσῃ εἰς τὰς ναῦς τῶν Ἑλλήνων» (Θ. Γαζῆς), Ἰλ. Κ. 450, Ὀδ. Τ. 69.
English (Autenrieth)
see εἶμι.