DRIFT ICE • FREE TRANSLATOR.ORG • Definition of Drift ice

... within an inconvenient if not hazardous proximity to the two vessels. These floes, however, unlike those previously encountered, were much broken by the undulations of the waves, and seldom exceeded a quarter of a mile in diameter; while thousands of them were no larger than the ordinary drift ice of our own principal rivers in the time of a freshet. Their vicinity to the track of the schooners, indeed, was first ascertained by the noise they produced in grinding against each other, which soon made itself audible even above ...

— The Sea Lions - The Lost Sealers • James Fenimore Cooper

... and down, gave an odd, little, deeply expressive whine, like a puppy afraid to take its first bath, plunged in with a rush, and struck out. Soon he was out upon a piece of drift ice, shaking himself, and began leaping from one lump of floating ice to another. It was tricky, slippery, slidy work, and a fall might mean a broken leg or a crushed skull; but anything was better than dissolving like mincemeat in the jaws ...

— The Way of the Wild • F. St. Mars