a. [ Cf. AS. fyrstig. ] 1. Attended with, or producing, frost; having power to congeal water; cold; freezing; as, a frosty night. [ 1913 Webster ]
2. Covered with frost; as, the grass is frosty. [ 1913 Webster ]
3. Chill in affection; without warmth of affection or courage. Johnson. [ 1913 Webster ]
4. Appearing as if covered with hoarfrost; white; gray-haired; as, a frosty head. Shak. [ 1913 Webster ]