STRONGS G2447:
													
												
									    		ἰός, 
οῦ, 
ὁ, (on its very uncertain derivation see 
Kreussler in Passow, under the word; Curtius § 591; [Vanicek, p. 969]);
1. poison (of animals): 
ἰὸς ἀσπίδων ὑπὸ τὰ χείλη αὐτῶν, the poison of asps is under their lips, spoken of men given to reviling and calumniating and thereby injuring others, 
Romans 3:13 (from 
Psalm 139:3 (
Ps. 140:4)); by the same figure, (
γλῶσσα) 
μεστὴ ἰοῦ θανατηφόρου, 
James 3:8; (in Greek writings from Pindar down).
2. rust: 
James 5:3; (
Ezekiel 24:6, 
11f; Baruch 6:11, 23 [Epistle 
Jeremiah 1:12, 24]; Theognis, Theocritus, Plato, Theophrastus, Polybius, Lucian, others). 
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