frost (n.)

Old English forst, frost "frost, a freezing, frozen precipitation, extreme cold," from Proto-Germanic *frustaz "frost" (source also of Old Saxon, Old Frisian, Old High German frost, Middle Dutch and Dutch vorst), from the verb *freusanan "to freeze" (source of Old English freosan "to freeze"), from suffixed form of PIE *preus- "to freeze; burn" (see freeze (v.)). Both forms of the word were common in English till late 15c.; the triumph of frost may be due to its similarity to the forms in other Germanic languages. A black frost (late 14c.) is one which kills plants (turns them black) but is not accompanied by visible frozen dew.

frost (v.)

1630s, "to cover with frost," from frost (n.). Intransitive sense of "to freeze" is from 1807. Related: Frosted; frosting.

updated on July 27, 2018

Definitions of frost from WordNet
frost (v.)
decorate with frosting;
frost a cake
Synonyms: ice
frost (v.)
provide with a rough or speckled surface or appearance;
frost the glass
she frosts her hair
frost (v.)
cover with frost;
ice crystals frosted the glass
frost (v.)
damage by frost;
The icy precipitation frosted the flowers and they turned brown
frost (n.)
ice crystals forming a white deposit (especially on objects outside);
Synonyms: hoar / hoarfrost / rime
frost (n.)
weather cold enough to cause freezing;
Synonyms: freeze
frost (n.)
the formation of frost or ice on a surface;
Synonyms: icing
Frost (n.)
United States poet famous for his lyrical poems on country life in New England (1874-1963);
Synonyms: Robert Frost / Robert Lee Frost
Etymologies are not definitions. From, not affiliated with etymonline.