Emily Dickinson Lexicon

FROST, n. [fraust; Sax. frost; G. Sw. and Dan. frost; D. vorst; from freeze, froze. Qu. Slav. mraz, mroz, id.]

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. Ps. cxlvii.
2. The act of freezing; congelation of fluids. The third day comes a frost, a killing frost. Shak.
3. In physiology, that state or temperature of the air which occasions freezing or the congelation of water. Encyc.
4. The appearance of plants sparkling with icy crystals. Pope.