Roughen (4)
'roughen' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for coarsen that I've seen before include "Become rough or insensitive" , "Make more harsh" , "Make rough or crude" , "Turn rough" , "Make rougher" .)
'roughen' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for chap that I've seen before include "Fish" , "Skin crack due to cold - bloke" , "(Of skin) become sore" , "Bloke, fellow" , "Raw, cracked patch on skin" .)