▪ (of a person) having gray or white hair; aged: "a hoary old fellow with a face of white stubble"Similarelderlyagedoldgetting onancientvenerablelong in the toothof an advanced ageadvanced in yearsgray-hairedwhite-hairedsilver-hairedsilvery-hairedgrizzledgrizzlyinformal:past itover the hillrare:longevoussenescentOppositeyoung
▪ used in names of animals and plants covered with whitish fur or short hairs, e.g. hoary bat, hoary cress.