1. White, or grayish white: as, hoar frost; hoar cliffs. Hoar waters.
2. Gray or white with age; hoary. Whose beard with age is hoar. (Coleridge) Old trees with trunks all hoar. (Byron)
3. Musty; moldy; stale.
Origin: oe. Hor, har, as. Har; akin to Icel. Harr, and to OHG. Her illustrious, magnificent; cf. Icel. Heith brightness of the sky, goth. Hais torch, Skr. Ketus light, torch. Cf. Hoary.