noun action oxidació , rovellament visible òxid , rovell , verdet colour de rovell Agriculture rovell , neula to rub the rust off treure el rovell idem figurative posar-se al corrent , desrovellar-se transitive verb oxidar , rovellar , fer-se verdet idleness rusts the mind l'ociositat esmussa l'enginy intransitive verb oxidar-se , rovellar-se , fer-se verdet to allow one's knowledge to rust deixar rovellar els coneixements