Where does “frost hollow” come from?

frost hollow (English) comes from English hollow, from Middle English holow, from Old English holh, from Proto-Germanic *hulhwą.

frost hollow (English): An enclosed depression with a much lower average temperature than the surrounding landscape, caused by the accumulation of cold, dense air

Definitions

  1. An enclosed depression with a much lower average temperature than the surrounding landscape, caused by the accumulation of cold, dense air

Ancestry of “frost hollow”, step by step

frost hollow traces back through two separate lines of ancestry.

via English hollow

StepLanguageWordMeaning
1EnglishhollowA small valley between mountains; A sunken area...
2Middle EnglishholowAlternative form of holgh; Alternative form of...
3Old Englishholha hollow
4Proto-Germanic*hulhwą

via English Frost

StepLanguageWordMeaning
1EnglishFrostA cover of minute ice crystals on objects that are exposed to the air. Frost is formed by the same process as dew, except that the temperature of the frosted object is below freezing
2Middle EnglishfrostCold, freezing, or frosty weather; weather that...
3Old Englishfrostproduced by metathesis
4Proto-Indo-Europeanprustósfrost
Every word from Proto-Germanic *hulhwąEvery word from Old English holhEvery word from Middle English holow
frost hollow — Etymology, Origin & Word History | Etymology Explorer