ἀργυροθώραξ
From LSJ
ὃν οὐ τύπτει λόγος οὐδὲ ῥάβδος → if words don't get through, neither a beating will | if the carrot doesn't work, the stick will not work either | whom words do not strike, neither does the rod
English (LSJ)
ᾱκος, ὁ,
A with a silver breastplate, Iamb.post Polem.p.49 Hinck.
Greek (Liddell-Scott)
ἀργῠροθώραξ: -ᾱκος, ὁ, ὁ ἀργυροῦν ἔχων θώρακα, Ρήτορες (Walz) 1. 531.
