Around in coarse vein? (7)
I believe the answer is:
roughly
'around' is the definition.
(synonyms)
'coarse vein?' is the wordplay.
'coarse' becomes 'rough' (associated in meaning).
'vein?' becomes 'ly' (I am not sure about this - if you are sure you should believe this answer much more).
'rough'+'ly'='ROUGHLY'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for roughly that I've seen before include "Sort of; with violence" , "Approximately, more or less" , "In the neighbourhood of" .)