The definition of hoary is very old, white or grey.
An example of hoary used as an adjective is in the phrase "hoary tree," which means a very old tree.
- white, gray, or grayish-white
- having white or gray hair from advanced agealso hoar′y-head·ed
- very old; ancient
Origin of hoaryhoar + -y
- Gray or white with or as if with age.
- Covered with grayish hair or pubescence: hoary leaves.
- So old as to inspire veneration; ancient.
(comparative hoarier, superlative hoariest)
hoar + -y.