Dad swallowing an excellent remedy for disease (7)
I believe the answer is:
panacea
'disease' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'dad swallowing an excellent remedy' is the wordplay.
'dad' becomes 'pa' (synonyms).
'swallowing' means one lot of letters goes inside another.
'excellent remedy' becomes 'ace' (I can't justify this - if you can you should give a lot more credence to this answer).
'an'+'ace'='anace'
'pa' enclosing 'anace' is 'PANACEA'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for panacea that I've seen before include "wonder drug" , "A cure-all for diseases or troubles" , "A soldier in the World War One Aus. and NZ Army Corps" , "sovereign remedy" , "that will cure anything" .)