ἰός

ἰός — iós

ἰός, ἰοῦ, ὁ (on its very uncertain derivation see Kreussler in Passow, under the word; Curtius, § 591; (Vanicek, p. 969));

1. poison (of animals): ἰός ἀσπίδων ὑπό τά χείλη αὐτῶν, the poison of asps is under their lips, spoken of men given to reviling and calumniating and thereby injuring others, Rom 3:13 (from Psa 139:3 ); by the same figure, (γλῶσσα) μεστή ἰοῦ θανατηφόρου, Jas 3:8; (in Greek writings from Pindar down).

2. rust: Jas 5:3; (Eze 24:6; Eze 24:11 f; Bar 6:11; Bar 6:23 (Epistle Jer 12:1-17; Jer 24:1-10); Theognis, Theocritus, Plato, Theophrastus, Polybius, Lucian, others).