Oxford Dictionary English ice cap noun noun BrE BrE//ˈaɪs kæp// ; NAmE NAmE//ˈaɪs kæp// Add to my wordlistjump to other resultsa layer of ice permanently covering parts of the earth, especially around the North and South PolesSee ice cap in the Oxford Learner's Dictionary of Academic EnglishSee ice cap in the Oxford Advanced American DictionaryCheck pronunciation: ice cap oxfordlearnersdictionaries.com