a. 1. White or whitish. “The hoary willows.” Addison. [ 1913 Webster ]
2. White or gray with age; hoar; as, hoary hairs. [ 1913 Webster ]
Reverence the hoary head. Dr. T. Dwight. [ 1913 Webster ]
3. Hence, remote in time past; as, hoary antiquity. [ 1913 Webster ]
4. Moldy; mossy; musty. [ Obs. ] Knolles. [ 1913 Webster ]
5. (Zool.) Of a pale silvery gray. [ 1913 Webster ]
6. (Bot.) Covered with short, dense, grayish white hairs; canescent. [ 1913 Webster ]
Hoary bat (Zool.), an American bat (Atalapha cinerea), having the hair yellowish, or brown, tipped with white. [ 1913 Webster ]