εἴσῃ

From LSJ

παραβλύζειν τοῦ οἴνου ἐν τῷ ὕπνωdisgorge wine in one's sleep, belch a bit of wine in one's sleep

Source

French (Bailly abrégé)

2ᵉ sg. f. Moy. de εἶμι.