hoary in WordNet English dictionary

1. covered with fine whitish hairs or down
   canescent  hoary 
   
2. showing characteristics of age, especially having grey or white hair
   "whose beard with age is hoar"-Coleridge; "nodded his hoary head"
   grey  gray  grey-haired  gray-haired  grey-headed  gray-headed  grizzly  hoar  hoary  white-haired 
   
3. ancient
   "hoary jokes"
   hoary  rusty