Husband and child going round island’s imposing dwelling (7)
I believe the answer is:
mansion
'imposing dwelling' is the definition.
'mansion' can be an answer for 'dwelling' (I have seen 'Large dwelling ' mean 'mansion' so perhaps 'dwelling' could also mean 'mansion'). I am unsure of the 'imposing' bit.
'husband and child going round island's' is the wordplay.
'husband' becomes 'man' (a married man).
'and' is a charade indicator (letters next to each other).
'child' becomes 'son' (male child).
'going round' indicates putting letters inside (some letters go around others).
'island' becomes 'i' (geographical abbreviation).
'son' placed around 'i' is 'sion'.
'man'+'sion'='MANSION'
Can you help me to learn more?
(Other definitions for mansion that I've seen before include "Stately home" , "housing" , "Impressive house" , "Opulent house" , "Big house" .)