Definition of "ice-sheet" [ice-sheet]

• A glacial covering or ice-cap extending over a large area of country, as that which is believed by many geologists to have covered much of eastern North America during the glacial period. (noun)

The Century Dictionary (Public Domain)

• "Too often the reasons we disagree about what to do about climate change are framed in this way, as disputes about the truth claims of some aspect of biogeophysical science – is the world warming; are greenhouse gases responsible; will this ice-sheet collapse?"
• "I have often thought that that cold winter was a fore-runner of the countless cold winters to come, as the ice-sheet from farther north crept down over the face of the land."
• "When the Yukon shut up shop and went to sleep under a three-foot ice-sheet, this peripatetic couple found themselves at the Five Finger Rapids, with the City of Gold still a journey of many sleeps to the north."