Adjective

(er)

White or gray with age.

The old man bowed his hoary head in acquiescence.

* 1787 , , "How Firm a Foundation":

And when hoary hairs shall their temples adorn,

Like lambs they shall still in My bosom be borne.

(zoology) Of a pale silvery gray.

(botany) Covered with short, dense, grayish white hairs; canescent.

(obsolete) Remote in time past.

(obsolete) Moldy; mossy; musty.

Old or old-fashioned.

* {{quote-news

, year=2012 , date=June 3 , author=Nathan Rabin , title=TV: Review: THE SIMPSONS (CLASSIC): “Mr. Plow” (season 4, episode 9; originally aired 11/19/1992) citation , page= , passage=In its God-like prime, The Simpsons attacked well-worn satirical fodder from unexpected angles, finding fresh laughs in the hoariest of subjects.}}