greybeard
/ˈɡreɪbɑːrd/Definitions
1. noun
A man with a long white beard, typically old or venerable.
“The village elder was known as the greybeard and was respected by all.”
2. noun
A long-bearded old man, especially one of authority or wisdom.
“The greybeard of the village council made a wise decision to invest in the local economy.”