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Related to ice floe: pack ice
A flat expanse of floating ice smaller than an ice field.
(Physical Geography) a sheet of ice, of variable size, floating in the sea. See also ice field1
1. a sheet of floating ice, chiefly on the surface of the sea, smaller than an ice field.
2. a detached floating portion of such a sheet.Also called ice floe .
[1810–20; perhaps < Norwegian flo layer (compare Old Norse flō layer, level); c. Old English flōh piece, flagstone; compare flaw1]