rubber ice


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rub′ber ice′


n.
Canadian. thin ice that shifts, cracks, or groans when crossed on foot.
[1915–20]
References in periodicals archive ?
One of Joanne's best experiences was glacier-hiking, for which Joanne had to wear 'yaks feet', a type of rubber ice crampon.
But writing on a website set up by sponsors Northgate Plc, Conrad said on Friday: "I have now walked on rubber ice for the first time.
I make a big batch then freeze it in Ikea rubber ice cube trays and you just pop it out.