ice pack
From Longman Dictionary of Contemporary EnglishRelated topics: Hospital, Geography, Oceanographyice packˈice pack noun [countable] 1 MHa bag containing ice that is put on injured or painful parts of your body to keep them cold2 SGa large area of crushed ice floating in the sea → pack iceExamples from the Corpusice pack• He says didn't realise it was so serious and sent him back to class with an ice pack.• Through the ice pack off Murmansk.