Dictionary entry

ἔχιδνα

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament with Strong's

** ἔχιδνα, -ης, ἡ,

[in OT (Aq.), Is 59:5*;]

a viper: Ac 28:3; metaph., γεννήματα ἐχιδνῶν, Mt 3:712:3423:33, Lk 3:7.†