Docks raised by blade-sharpener (5)
I believe the answer is:
strop
'sharpener' is the definition.
(I know that strop is a type of sharpener)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for strop that I've seen before include "rage" , "Paddy" , "Bad temper - sharpen (a razor)" , "Outburst" , "Strip of leather on which razor is sharpened" .)