floe
FLOH
A sheet of floating ice — ranging from a few feet across to miles wide. Pack ice is composed of floes pressed together; a floe field is an expanse of them. The word implies drift — floes are not anchored, they move with wind and current, rotating, colliding, splitting, and rafting on top of each other.
Etymology
Probably from Norwegian flo, a layer, or related to Old English flōh, a chip, a fragment.
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