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1. Deviation from a set course caused by drifting.
2. Matter that has been carried along or deposited by air or water currents.
1. the act of drifting
2. (Physical Geography) matter carried along or deposited by drifting
3. (Navigation) the amount by which an aircraft or vessel has drifted from its intended course
1. the action of drifting or deviating.
2. drifted matter.
3. the amount of drift away from a set course as a result of wind and currents.