Loud gale circulating round large Welsh town (9)
I believe the answer is:
dolgellau
'welsh town' is the definition.
I know nothing about this answer so I can't tell whether this works.
'loud gale circulating round large' is the wordplay.
'circulating' indicates an anagram.
'round' means one lot of letters goes inside another.
'large' becomes 'L' (eg in clothes sizes).
'loud'+'gale'='loudgale'
'loudgale' anagrammed gives 'dolgelau'.
'dolgelau' enclosing 'l' is 'DOLGELLAU'.
Can you help me to learn more?
(Other definitions for dolgellau that I've seen before include "Welsh community" , "somewhere in Wales" , "Welsh market town, lug old ale (anag.)" , "Town in Snowdonia" , "town in Wales" .)