Cured by drink he'd swallowed? (6)
I believe the answer is:
healed
'cured' is the definition.
(I know that cured can be written as healed)
'drink he'd swallowed?' is the wordplay.
I cannot really understand how this works, but
'drink' could be 'ale' (type of beer) and 'ale' is located in the answer.
'he'd' could be 'hed' and 'hed' is found within the leftover letters.
This accounts for all the letters.
This explanation may well be incorrect...
'by' acts as a link.
Can you help me to learn more?
(Other definitions for healed that I've seen before include "Put right" , "Mended, recovered" , "Cured, mended" , "Became healthy again" , "Became well again" .)