Mum's wise to get therapy (7)
I believe the answer is:
massage
'therapy' is the definition.
The answer and definition can be both acts as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'mum's wise' is the wordplay.
'mum's' becomes 'ma's' (ma can mean mother).
'wise' becomes 'sage' (similar in meaning).
'mas'+'sage'='MASSAGE'
'to get' acts as a link.
Can you help me to learn more?
(Other definitions for massage that I've seen before include "Knead" , "Relaxing manipulation" , "therapeutic treatment" , "See 10" , "Rub to relieve pain" .)