1. A fluid congealed by cold into ice or crystals; as hoar-frost, which is dew or vapor congealed.
He scattereth the hoar-frost like ashes. Psa 147.
2. The act of freezing; congelation of fluids.
The third day comes a frost, a killing frost.
3. In physiology, that state or temperature of the air which occasions freezing or the coagelation of water.
4. The appearance of plants sparkling with icy crystals.
, v.t.
1. In cookery, to cover or sprinkle with a composition of sugar, resembling hoar-frost; as, to frost cake.
2. To cover with any thing resembling hoarfrost.