rodere, arrodere, derodere aliquid: circumrodere aliquid (to gnaw round about): praerodere (to gnaw at one end): exedere (to eat away or through; of animals, corroding substances, rust; and figuratively, of cares, anxieties, etc.; edere is poetical in this sense). To gnaw through anything, aliquid exedere et perrumpere: trouble, etc., is gnawing at my heart, aegritudo me or animum meum exest, pungit, or cruciat: gnawing cares, sollicitudines mordaces (Hor., Od. l, 18, 4): a kind of gnawing pain, quasi morsus qs doloris.