ἔχις
From LSJ
μακάριοι οἱ πτωχοί τῷ πνεύματι ὄτι αὐτῶν ἐστὶν ἡ βασιλεία τῶν οὐρανῶν → blessed are the poor in spirit, for theirs is the kingdom of heaven (Matthew 5:3)
English (LSJ)
[Nic. Th.223, -ῑς metri gr. IG2.1660], εως, ὁ (ἡ Opp.C.3.439), gen. pl.
A ἔχεων Pl.Euthd.290a: gen. sg. ἔχιος Nic.Th.130: pl., dat. ἐχίεσσι ib.826; gen. ἐχίων ib.653; acc. ἔχιας ib.9, but ἔχεις Thphr. Char.1.7:—viper, Pl.Smp.217e, Arist.HA511a16, etc.: metaph., συκοφάντης καὶ ἔ. τὴν φύσιν D.25.96; ὥσπερ ἔ. ἢ σκορπίος ἠρκὼς τὸ κέντρον ib.52; cf. ἔχιδνα. II = ἔχιον 11, Nic.Th.541, 636, Plin. HN22.50.