(1):
(a.) Attended with, or producing, frost; having power to congeal water; cold; freezing; as, a frosty night.
(2):
(a.) Covered with frost; as, the grass is frosty.
(3):
(a.) Chill in affection; without warmth of affection or courage.
(4):
(a.) Appearing as if covered with hoarfrost; white; gray-haired; as, a frosty head.