frost
frost · noun
Definitions
noun
- 1.
A thin layer of ice crystals that forms on surfaces when the temperature falls below freezing.
- 2.
A period of weather cold enough to cause freezing.
- 3.
(as verb) To cover with frost or something resembling frost; to ice a cake.
Forms
plural: frosts
Phrases & expressions
- •frost over — to become covered with frost
- •frostbite — injury to body tissues caused by exposure to extreme cold
- •Jack Frost — a personification of winter cold
Related words
Etymology
From Old English forst, frost, from Proto-Germanic frustaz ("frost"). Related to freeze.