hoar

Definitions of hoar
1

n ice crystals forming a white deposit (especially on objects outside)

Synonyms:
frost, hoarfrost, rime
Type of:
ice, water ice
water frozen in the solid state

adj showing characteristics of age, especially having grey or white hair

“"whose beard with age is hoar"-Coleridge”
Synonyms:
gray, gray-haired, gray-headed, grey, grey-haired, grey-headed, grizzly, hoary, white-haired
old
(used especially of persons) having lived for a relatively long time or attained a specific age

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