Definition of pack ice
: sea ice formed into a mass by the crushing together of pans, floes, and brash
First Known Use of pack ice
PACK ICE Defined for English Language Learners
Definition of pack ice for English Language Learners
: a very large sheet of ice floating in the sea that is made from smaller pieces that have frozen together
Seen and Heard
What made you want to look up pack ice? Please tell us where you read or heard it (including the quote, if possible).