Whetstone; sharpen or cut back (4)
I believe the answer is:
hone
(Other definitions for hone that I've seen before include "Strop" , "Polish" , "Sharpen (a blade)" , "Sharpen tool on stone" , "Smooth stone" .)
I believe the answer is:
hone
(Other definitions for hone that I've seen before include "Strop" , "Polish" , "Sharpen (a blade)" , "Sharpen tool on stone" , "Smooth stone" .)