Charlie of the Rolling Stones (5)
I believe the answer is:
watts
'charlie of the rolling stones' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for watts that I've seen before include "G. F. -, Eng. artist; power units" , "Rolling Stones drummer?" , "Power units (lighting)" , "Sculptor" , "rates of working" .)