"hoar" in the noun sense

1. frost, hoar, hoarfrost, rime

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

"hoar" in the adjective sense

1. grey, gray, grey-haired, gray-haired, grey-headed, gray-headed, grizzly, hoar, hoary, white-haired

showing characteristics of age, especially having grey or white hair

"whose beard with age is hoar"-Coleridge

"nodded his hoary head"

Source: WordNet® (An amazing lexical database of English)

Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.

View WordNet® License