an ice sheet projecting into coastal waters so that the end floats.
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A Glimpse Into The Differences Among US, UK, And Aussie EnglishAmerican, Australian, and UK English sometimes feel like apples and oranges ... and bananas? The real kicker comes when a juxtaposition of all three languages occurs (Like in this here slideshow!), because that's when their differences really shine.
Origin of ice shelf
First recorded in 1910–15
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for ice shelf
To raise the packages from the floe to the top of the ice-shelf, a "flying-fox" was rigged.The Home of the Blizzard|Douglas Mawson
British Dictionary definitions for ice shelf
a thick mass of ice that is permanently attached to the land but projects into and floats on the sea
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012