ice apron

ice apron
noun
: a wedge-shaped structure for protecting a bridge pier from floating ice

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a structure built in a river upstream from a bridge pier or the like for protection against drifting ice.
[1865-70]

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ice apron noun
A structure on the upstream side of a bridge pier to break or ward off floating ice
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Main Entry:ice

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ice apron,
a pointed structure for protecting a bridge pier from ice carried down by the stream.

Useful english dictionary. 2012.

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