Crossword Genius

Old man receiving a card: get well with it (7)

Ross

I believe the answer is:

panacea

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'well with it' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'old man receiving a card' is the wordplay.
'old man' becomes 'pa' (both can mean someone's father).
'receiving' indicates putting letters inside.
'a' becomes 'an'.
'card' becomes 'ace' (ace is a type of playing card).
'an'+'ace'='anace'
'pa' placed around 'anace' is 'PANACEA'.

'get' is the link.

Can you help me to learn more?

(Other definitions for panacea that I've seen before include "Cure for all things" , "Remedy for all kinds of diseases or troubles" , "Solution to all difficulties" , "Cure for all ills" , "A soldier in the World War One Aus. and NZ Army Corps" .)

I've seen this clue in The Sun.
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