Swirling current creating a small whirlpool (4)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
eddy
(Other definitions for eddy that I've seen before include "Swirl; Duane -, US guitarist" , "Swirl, whirl" , "She founded Christian Science in 1866, d. 1910" , "Christian Scientist" , "Counter-current" .)