Available Definitions:
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.