rust1, s.1Meirg f. To rub the rust off, (i) an mheirg a bhaint de (rud); (ii) F: athstaidéar a dhéanamh ar (ábhar léinn). 2Agr: Bruth m rua, smoirt f. Black rust, dúchan f -a.
rust2,1v.i.Meirgeann, déanann meirg. F: To allow one's knowledge to rust, do chuid eolais a ligean chun dearmaid. 2v.tr.Cuireann meirg ar (rud). F: Idleness rusts the mind, intinn dhall ag leadaí na leisce.