drift

1. Anything driven at random. (countable, uncountable)
2. A mass of matter which has been driven or forced onward together in a body, or thrown together in a heap, etc., especially by wind or water. (countable, uncountable) · a drift of snow, of ice, of sand, of plants, etc.
3. The distance through which a current flows in a given time. (countable, uncountable)
4. The animals being moved in a drive, as of cattle, goats, horses, pigs or sheep. (countable, uncountable)
5. A group of birds moving together. (countable, uncountable)
6. A collection of loose earth and rocks, or boulders, which have been distributed over large portions of the earth's surface, especially in latitudes north of forty degrees, by the retreat of continental glaciers, such as that which buries former river valleys and creates young river valleys. (countable, uncountable)
7. A collection of logs floating down a river. (countable)
8. Driftwood included in flotsam washed up onto the beach. (countable, uncountable)

الجمع drifts