n.(高山等上之)常積不消的冰；冰蓋

=ice cap.

Some 95 percent of Antarctica is covered by an icecap averaging . 南極洲約百分之九十五的地方被厚度差不多的常積不消的冰覆蓋著。

Antarctica also moves north, shedding its icecap. 南極洲也北移，甩掉冰冠。

Large, flat sheets of the icecap called ice shelves float in water near Antarctica. 大而扁平狀的冰冠稱作冰架，它們漂浮在南極洲周邊的水域中。