A movement in a stream of air, water, etc in which the current doubles back on itself (4)

I believe the answer is:

eddy

(Other definitions for eddy that I've seen before include "Fellow" , "(Of fluid) circle round" , "Current running against the main stream, causes small whirlpool" , "making the rounds?" , "Swirl; Duane -, US guitarist" .)

I've seen this clue in The Independent.

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