frost hollow

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Related to frost hollows: frost pocket

frost hollow

n
(Physical Geography) a depression in a hilly area in which cold air collects, becoming very cold at night
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References in periodicals archive ?
Leon Brown, chief forecaster of Birminghambased The Weather Channel, said: "Saturday night will still be the coldest with a widespread moderate to severe frost and temperatures falling to -3degC and -6degC - with a few frost hollows dipping to -7degC or -8degC."
"On Tuesday night some places could be in for minus 6C or even less where there are frost hollows with clear skies and light winds.