(UK, usually passive) To prevent (an event) from occurring due to snow.
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(UK, usually passive) To prevent (a person or thing) from leaving (a place) or using (a road or path) due to snow.
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Add your own interpretation of "snow up".
Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
See all Regional & Other slang on Slangora.