Lewis Short
(verb) : rōdo, si, sum, 3, cf. rado
* To gnaw (class.).
* Lit.: rutabulum, Novat. ap. Fest. p. 262 Müll. (Com. Rel. p. 226 Rib.): clipeos, etc. (mures),Cic. Div. 2, 27, 59: praetextam, Poët. ap. Quint. 8, 3, 19: dente pollicem,Hor. Epod. 5, 48: vivos ungues,id. S. 1, 10, 71: vitem (caper),Ov. F. 1, 357: saxa capellae,id. M. 13, 691: reliquias (mures),Phaedr. 1, 22, 6: rosus tineis,Stat. S. 4, 9, 10.
* Transf., to eat away, waste away, corrode, consume: ripas (flumina),Lucr. 5, 256: ferrum (robigo),Ov. P. 1, 1, 71: tophum (calx),Plin. 36, 22, 48, § 166.
* Trop., to backbite, slander, disparage, etc. (syn. vellico): in conviviis rodunt,Cic. Balb. 26, 57: absentem amicum,Hor. S. 1, 4, 81: libertino patre natum,id. ib. 1, 6, 46: cuncta robiginosis dentibus,Mart. 5, 28, 7; cf.: dentem dente,i. e. to speak ill of each other,id. 13, 2, 6: murmura secum et rabiosa silentia rodunt, i. e. to mutter to one's self, Pers. 3, 81.
Charlton T. Lewis, Charles Short, A Latin Dictionary